From: Radek Czajka 
Date: Fri, 19 Aug 2011 11:24:53 +0000 (+0200)
Subject: Merge branch 'master' into with-dvcs
X-Git-Url: https://git.mdrn.pl/redakcja.git/commitdiff_plain/fdd62169ba22c4c1be2f2306b5339eadd74ffb6d?hp=9053b4410f14a2ceb2b14f9af42dc46c742dc196
Merge branch 'master' into with-dvcs
---
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..56b9c425
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/librarian"]
+	path = lib/librarian
+	url = git://github.com/fnp/librarian.git
diff --git a/apps/apiclient/__init__.py b/apps/apiclient/__init__.py
new file mode 100644
index 00000000..7913ac3c
--- /dev/null
+++ b/apps/apiclient/__init__.py
@@ -0,0 +1,46 @@
+import urllib
+
+from django.utils import simplejson
+import oauth2
+
+from apiclient.models import OAuthConnection
+from apiclient.settings import WL_CONSUMER_KEY, WL_CONSUMER_SECRET, WL_API_URL
+
+
+if WL_CONSUMER_KEY and WL_CONSUMER_SECRET:
+    wl_consumer = oauth2.Consumer(WL_CONSUMER_KEY, WL_CONSUMER_SECRET)
+else:
+    wl_consumer = None
+
+
+class ApiError(BaseException):
+    pass
+
+
+class NotAuthorizedError(BaseException):
+    pass
+
+
+def api_call(user, path, data=None):
+    # what if not verified?
+    conn = OAuthConnection.get(user)
+    if not conn.access:
+        raise NotAuthorizedError("No WL authorization for user %s." % user)
+    token = oauth2.Token(conn.token, conn.token_secret)
+    client = oauth2.Client(wl_consumer, token)
+    if data is not None:
+        resp, content = client.request(
+                "%s%s.json" % (WL_API_URL, path),
+                method="POST",
+                body=urllib.urlencode(data))
+    else:
+        resp, content = client.request(
+                "%s%s.json" % (WL_API_URL, path))
+    status = resp['status']
+    if status == '200':
+        return simplejson.loads(content)
+    elif status.startswith('2'):
+        return
+    else:
+        raise ApiError("WL API call error")
+
diff --git a/apps/apiclient/migrations/0001_initial.py b/apps/apiclient/migrations/0001_initial.py
new file mode 100644
index 00000000..4af28a52
--- /dev/null
+++ b/apps/apiclient/migrations/0001_initial.py
@@ -0,0 +1,75 @@
+# encoding: utf-8
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        
+        # Adding model 'OAuthConnection'
+        db.create_table('apiclient_oauthconnection', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('user', self.gf('django.db.models.fields.related.OneToOneField')(to=orm['auth.User'], unique=True)),
+            ('access', self.gf('django.db.models.fields.BooleanField')(default=False)),
+            ('token', self.gf('django.db.models.fields.CharField')(max_length=64, null=True, blank=True)),
+            ('token_secret', self.gf('django.db.models.fields.CharField')(max_length=64, null=True, blank=True)),
+        ))
+        db.send_create_signal('apiclient', ['OAuthConnection'])
+
+
+    def backwards(self, orm):
+        
+        # Deleting model 'OAuthConnection'
+        db.delete_table('apiclient_oauthconnection')
+
+
+    models = {
+        'apiclient.oauthconnection': {
+            'Meta': {'object_name': 'OAuthConnection'},
+            'access': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'token': ('django.db.models.fields.CharField', [], {'max_length': '64', 'null': 'True', 'blank': 'True'}),
+            'token_secret': ('django.db.models.fields.CharField', [], {'max_length': '64', 'null': 'True', 'blank': 'True'}),
+            'user': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['auth.User']", 'unique': 'True'})
+        },
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        }
+    }
+
+    complete_apps = ['apiclient']
diff --git a/apps/apiclient/migrations/__init__.py b/apps/apiclient/migrations/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/apps/apiclient/models.py b/apps/apiclient/models.py
new file mode 100644
index 00000000..d3c8f620
--- /dev/null
+++ b/apps/apiclient/models.py
@@ -0,0 +1,20 @@
+from django.db import models
+from django.contrib.auth.models import User
+
+
+class OAuthConnection(models.Model):
+    user = models.OneToOneField(User)
+    access = models.BooleanField(default=False)
+    token = models.CharField(max_length=64, null=True, blank=True)
+    token_secret = models.CharField(max_length=64, null=True, blank=True)
+
+    @classmethod
+    def get(cls, user):
+        try:
+            return cls.objects.get(user=user)
+        except cls.DoesNotExist:
+            o = cls(user=user)
+            o.save()
+            return o
+
+
diff --git a/apps/apiclient/settings.py b/apps/apiclient/settings.py
new file mode 100755
index 00000000..5fbf18ee
--- /dev/null
+++ b/apps/apiclient/settings.py
@@ -0,0 +1,15 @@
+from django.conf import settings
+
+
+WL_CONSUMER_KEY = getattr(settings, 'APICLIENT_WL_CONSUMER_KEY', None)
+WL_CONSUMER_SECRET = getattr(settings, 'APICLIENT_WL_CONSUMER_SECRET', None)
+
+WL_API_URL = getattr(settings, 'APICLIENT_WL_API_URL', 
+        'http://www.wolnelektury.pl/api/')
+
+WL_REQUEST_TOKEN_URL = getattr(settings, 'APICLIENT_WL_REQUEST_TOKEN_URL', 
+        WL_API_URL + 'oauth/request_token/')
+WL_ACCESS_TOKEN_URL = getattr(settings, 'APICLIENT_WL_ACCESS_TOKEN_URL', 
+        WL_API_URL + 'oauth/access_token/')
+WL_AUTHORIZE_URL = getattr(settings, 'APICLIENT_WL_AUTHORIZE_URL', 
+        WL_API_URL + 'oauth/authorize/')
diff --git a/apps/apiclient/tests.py b/apps/apiclient/tests.py
new file mode 100644
index 00000000..2247054b
--- /dev/null
+++ b/apps/apiclient/tests.py
@@ -0,0 +1,23 @@
+"""
+This file demonstrates two different styles of tests (one doctest and one
+unittest). These will both pass when you run "manage.py test".
+
+Replace these with more appropriate tests for your application.
+"""
+
+from django.test import TestCase
+
+class SimpleTest(TestCase):
+    def test_basic_addition(self):
+        """
+        Tests that 1 + 1 always equals 2.
+        """
+        self.failUnlessEqual(1 + 1, 2)
+
+__test__ = {"doctest": """
+Another way to test that 1 + 1 is equal to 2.
+
+>>> 1 + 1 == 2
+True
+"""}
+
diff --git a/apps/apiclient/urls.py b/apps/apiclient/urls.py
new file mode 100755
index 00000000..5e54965e
--- /dev/null
+++ b/apps/apiclient/urls.py
@@ -0,0 +1,6 @@
+from django.conf.urls.defaults import *
+
+urlpatterns = patterns('apiclient.views',
+    url(r'^oauth/$', 'oauth', name='users_oauth'),
+    url(r'^oauth_callback/$', 'oauth_callback', name='users_oauth_callback'),
+)
diff --git a/apps/apiclient/views.py b/apps/apiclient/views.py
new file mode 100644
index 00000000..f8515904
--- /dev/null
+++ b/apps/apiclient/views.py
@@ -0,0 +1,60 @@
+import cgi
+
+from django.contrib.auth.decorators import login_required
+from django.core.urlresolvers import reverse
+from django.http import HttpResponseRedirect, HttpResponse
+import oauth2
+
+from apiclient.models import OAuthConnection
+from apiclient import wl_consumer
+from apiclient.settings import (WL_REQUEST_TOKEN_URL, WL_ACCESS_TOKEN_URL, 
+        WL_AUTHORIZE_URL)
+
+
+@login_required
+def oauth(request):
+    if wl_consumer is None:
+        return HttpResponse("OAuth consumer not configured.")
+
+    client = oauth2.Client(wl_consumer)
+    resp, content = client.request(WL_REQUEST_TOKEN_URL)
+    if resp['status'] != '200':
+        raise Exception("Invalid response %s." % resp['status'])
+
+    request_token = dict(cgi.parse_qsl(content))
+    
+    conn = OAuthConnection.get(request.user)
+    # this might reset existing auth!
+    conn.access = False
+    conn.token = request_token['oauth_token']
+    conn.token_secret = request_token['oauth_token_secret']
+    conn.save()
+
+    url = "%s?oauth_token=%s&oauth_callback=%s" % (
+            WL_AUTHORIZE_URL, 
+            request_token['oauth_token'],
+            request.build_absolute_uri(reverse("users_oauth_callback")),
+            )
+
+    return HttpResponseRedirect(url)
+
+
+@login_required
+def oauth_callback(request):
+    if wl_consumer is None:
+        return HttpResponse("OAuth consumer not configured.")
+
+    oauth_verifier = request.GET.get('oauth_verifier')
+    conn = OAuthConnection.get(request.user)
+    token = oauth2.Token(conn.token, conn.token_secret)
+    token.set_verifier(oauth_verifier)
+    client = oauth2.Client(wl_consumer, token)
+    resp, content = client.request(WL_ACCESS_TOKEN_URL, method="POST")
+    access_token = dict(cgi.parse_qsl(content))
+
+    conn.access = True
+    conn.token = access_token['oauth_token']
+    conn.token_secret = access_token['oauth_token_secret']
+    conn.save()
+
+    return HttpResponseRedirect('/')
diff --git a/apps/catalogue/__init__.py b/apps/catalogue/__init__.py
new file mode 100644
index 00000000..c53f0e73
--- /dev/null
+++ b/apps/catalogue/__init__.py
@@ -0,0 +1 @@
+  # pragma: no cover
diff --git a/apps/catalogue/admin.py b/apps/catalogue/admin.py
new file mode 100644
index 00000000..70e20d20
--- /dev/null
+++ b/apps/catalogue/admin.py
@@ -0,0 +1,12 @@
+from django.contrib import admin
+
+from catalogue import models
+
+class BookAdmin(admin.ModelAdmin):
+    prepopulated_fields = {'slug': ['title']}
+
+
+admin.site.register(models.Book, BookAdmin)
+admin.site.register(models.Chunk)
+
+admin.site.register(models.Chunk.tag_model)
diff --git a/apps/catalogue/constants.py b/apps/catalogue/constants.py
new file mode 100644
index 00000000..d75d6b4b
--- /dev/null
+++ b/apps/catalogue/constants.py
@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+
+TRIM_BEGIN = " TRIM_BEGIN "
+TRIM_END = " TRIM_END "
+
+MASTERS = ['powiesc',
+           'opowiadanie',
+           'liryka_l',
+           'liryka_lp',
+           'dramat_wierszowany_l',
+           'dramat_wierszowany_lp',
+           'dramat_wspolczesny',
+           ]
diff --git a/apps/catalogue/fixtures/stages.json b/apps/catalogue/fixtures/stages.json
new file mode 100644
index 00000000..5a46ec04
--- /dev/null
+++ b/apps/catalogue/fixtures/stages.json
@@ -0,0 +1,83 @@
+[
+    {
+        "pk": 1, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 1, 
+            "name": "Autokorekta", 
+            "slug": "first_correction"
+        }
+    }, 
+    {
+        "pk": 2, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 2, 
+            "name": "Tagowanie", 
+            "slug": "tagging"
+        }
+    }, 
+    {
+        "pk": 3, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 3, 
+            "name": "Korekta", 
+            "slug": "proofreading"
+        }
+    }, 
+    {
+        "pk": 4, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 4, 
+            "name": "Sprawdzenie przypis\u00f3w \u017ar\u00f3d\u0142a", 
+            "slug": "annotation-proofreading"
+        }
+    }, 
+    {
+        "pk": 5, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 5, 
+            "name": "Uwsp\u00f3\u0142cze\u015bnienie", 
+            "slug": "modernisation"
+        }
+    }, 
+    {
+        "pk": 6, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 6, 
+            "name": "Przypisy", 
+            "slug": "annotations"
+        }
+    }, 
+    {
+        "pk": 7, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 7, 
+            "name": "Motywy", 
+            "slug": "themes"
+        }
+    }, 
+    {
+        "pk": 8, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 8, 
+            "name": "Ostateczna redakcja literacka", 
+            "slug": "editor-proofreading"
+        }
+    }, 
+    {
+        "pk": 9, 
+        "model": "catalogue.chunktag", 
+        "fields": {
+            "ordering": 9, 
+            "name": "Ostateczna redakcja techniczna", 
+            "slug": "technical-editor-proofreading"
+        }
+    }
+]
diff --git a/apps/catalogue/forms.py b/apps/catalogue/forms.py
new file mode 100644
index 00000000..6a56e764
--- /dev/null
+++ b/apps/catalogue/forms.py
@@ -0,0 +1,124 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from django.contrib.auth.models import User
+from django.db.models import Count
+from django import forms
+from django.utils.translation import ugettext_lazy as _
+
+from catalogue.constants import MASTERS
+from catalogue.models import Book, Chunk
+
+class DocumentCreateForm(forms.ModelForm):
+    """
+        Form used for creating new documents.
+    """
+    file = forms.FileField(required=False)
+    text = forms.CharField(required=False, widget=forms.Textarea)
+
+    class Meta:
+        model = Book
+        exclude = ['gallery', 'parent', 'parent_number']
+        prepopulated_fields = {'slug': ['title']}
+
+    def clean(self):
+        super(DocumentCreateForm, self).clean()
+        file = self.cleaned_data['file']
+
+        if file is not None:
+            try:
+                self.cleaned_data['text'] = file.read().decode('utf-8')
+            except UnicodeDecodeError:
+                raise forms.ValidationError("Text file must be UTF-8 encoded.")
+
+        if not self.cleaned_data["text"]:
+            raise forms.ValidationError("You must either enter text or upload a file")
+
+        return self.cleaned_data
+
+
+class DocumentsUploadForm(forms.Form):
+    """
+        Form used for uploading new documents.
+    """
+    file = forms.FileField(required=True, label=_('ZIP file'))
+
+    def clean(self):
+        file = self.cleaned_data['file']
+
+        import zipfile
+        try:
+            z = self.cleaned_data['zip'] = zipfile.ZipFile(file)
+        except zipfile.BadZipfile:
+            raise forms.ValidationError("Should be a ZIP file.")
+        if z.testzip():
+            raise forms.ValidationError("ZIP file corrupt.")
+
+        return self.cleaned_data
+
+
+class ChunkForm(forms.ModelForm):
+    """
+        Form used for editing a chunk.
+    """
+    user = forms.ModelChoiceField(queryset=
+        User.objects.annotate(count=Count('chunk')).
+        order_by('-count', 'last_name', 'first_name'), required=False)
+
+
+    class Meta:
+        model = Chunk
+        exclude = ['number']
+
+    def clean_slug(self):
+        slug = self.cleaned_data['slug']
+        try:
+            chunk = Chunk.objects.get(book=self.instance.book, slug=slug)
+        except Chunk.DoesNotExist:
+            return slug
+        if chunk == self.instance:
+            return slug
+        raise forms.ValidationError(_('Chunk with this slug already exists'))
+
+
+class ChunkAddForm(ChunkForm):
+    """
+        Form used for adding a chunk to a document.
+    """
+
+    def clean_slug(self):
+        slug = self.cleaned_data['slug']
+        try:
+            user = Chunk.objects.get(book=self.instance.book, slug=slug)
+        except Chunk.DoesNotExist:
+            return slug
+        raise forms.ValidationError(_('Chunk with this slug already exists'))
+
+
+class BookAppendForm(forms.Form):
+    """
+        Form for appending a book to another book.
+        It means moving all chunks from book A to book B and deleting A.
+    """
+
+    append_to = forms.ModelChoiceField(queryset=Book.objects.all(),
+        label=_("Append to"))
+
+
+class BookForm(forms.ModelForm):
+    """
+        Form used for editing a Book.
+    """
+
+    class Meta:
+        model = Book
+
+
+class ChooseMasterForm(forms.Form):
+    """
+        Form used for fixing the chunks in a book.
+    """
+
+    master = forms.ChoiceField(choices=((m, m) for m in MASTERS))
diff --git a/apps/catalogue/helpers.py b/apps/catalogue/helpers.py
new file mode 100644
index 00000000..c9dc0bd9
--- /dev/null
+++ b/apps/catalogue/helpers.py
@@ -0,0 +1,65 @@
+from functools import wraps
+
+from django.db.models import Count
+
+
+def active_tab(tab):
+    """
+        View decorator, which puts tab info on a request.
+    """
+    def wrapper(f):
+        @wraps(f)
+        def wrapped(request, *args, **kwargs):
+            request.catalogue_active_tab = tab
+            return f(request, *args, **kwargs)
+        return wrapped
+    return wrapper
+
+
+class ChunksList(object):
+    def __init__(self, chunk_qs):
+        self.chunk_qs = chunk_qs.annotate(
+            book_length=Count('book__chunk')).select_related(
+            'book', 'stage__name',
+            'user')
+
+        self.book_qs = chunk_qs.values('book_id')
+
+    def __getitem__(self, key):
+        if isinstance(key, slice):
+            return self.get_slice(key)
+        elif isinstance(key, int):
+            return self.get_slice(slice(key, key+1))[0]
+        else:
+            raise TypeError('Unsupported list index. Must be a slice or an int.')
+
+    def __len__(self):
+        return self.book_qs.count()
+
+    def get_slice(self, slice_):
+        book_ids = [x['book_id'] for x in self.book_qs[slice_]]
+        chunk_qs = self.chunk_qs.filter(book__in=book_ids)
+
+        chunks_list = []
+        book = None
+        for chunk in chunk_qs:
+            if chunk.book != book:
+                book = chunk.book
+                chunks_list.append(ChoiceChunks(book, [chunk], chunk.book_length))
+            else:
+                chunks_list[-1].chunks.append(chunk)
+        return chunks_list
+
+
+class ChoiceChunks(object):
+    """
+        Associates the given chunks iterable for a book.
+    """
+
+    chunks = None
+
+    def __init__(self, book, chunks, book_length):
+        self.book = book
+        self.chunks = chunks
+        self.book_length = book_length
+
diff --git a/apps/catalogue/locale/pl/LC_MESSAGES/django.mo b/apps/catalogue/locale/pl/LC_MESSAGES/django.mo
new file mode 100644
index 00000000..f841945b
Binary files /dev/null and b/apps/catalogue/locale/pl/LC_MESSAGES/django.mo differ
diff --git a/apps/catalogue/locale/pl/LC_MESSAGES/django.po b/apps/catalogue/locale/pl/LC_MESSAGES/django.po
new file mode 100644
index 00000000..c760f3a7
--- /dev/null
+++ b/apps/catalogue/locale/pl/LC_MESSAGES/django.po
@@ -0,0 +1,508 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR , YEAR.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Platforma Redakcyjna\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2011-06-21 13:41+0200\n"
+"PO-Revision-Date: 2011-06-21 13:46+0100\n"
+"Last-Translator: Radek Czajka \n"
+"Language-Team: Fundacja Nowoczesna Polska \n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: forms.py:32
+msgid "Publishable"
+msgstr "Gotowe do publikacji"
+
+#: forms.py:68
+msgid "ZIP file"
+msgstr "Plik ZIP"
+
+#: forms.py:99
+#: forms.py:137
+msgid "Author"
+msgstr "Autor"
+
+#: forms.py:100
+#: forms.py:138
+msgid "Your name"
+msgstr "ImiÄ i nazwisko"
+
+#: forms.py:105
+#: forms.py:143
+msgid "Author's email"
+msgstr "E-mail autora"
+
+#: forms.py:106
+#: forms.py:144
+msgid "Your email address, so we can show a gravatar :)"
+msgstr "Adres e-mail, żebyÅmy mogli pokazaÄ gravatar :)"
+
+#: forms.py:112
+#: forms.py:150
+msgid "Your comments"
+msgstr "Twój komentarz"
+
+#: forms.py:113
+msgid "Describe changes you made."
+msgstr "Opisz swoje zmiany"
+
+#: forms.py:119
+msgid "Completed"
+msgstr "UkoÅczono"
+
+#: forms.py:120
+msgid "If you completed a life cycle stage, select it."
+msgstr "JeÅli zostaÅ ukoÅczony etap prac, wskaż go."
+
+#: forms.py:151
+msgid "Describe the reason for reverting."
+msgstr "Opisz powód przywrócenia."
+
+#: forms.py:176
+#: forms.py:190
+msgid "Chunk with this slug already exists"
+msgstr "CzÄÅÄ z tym slugiem już istnieje"
+
+#: forms.py:202
+msgid "Append to"
+msgstr "DoÅÄ
cz do"
+
+#: models.py:25
+msgid "title"
+msgstr "tytuÅ"
+
+#: models.py:26
+msgid "slug"
+msgstr ""
+
+#: models.py:27
+msgid "scan gallery name"
+msgstr "nazwa galerii skanów"
+
+#: models.py:29
+msgid "parent"
+msgstr "rodzic"
+
+#: models.py:30
+msgid "parent number"
+msgstr "numeracja rodzica"
+
+#: models.py:40
+msgid "book"
+msgstr "ksiÄ
żka"
+
+#: models.py:41
+msgid "books"
+msgstr "ksiÄ
żki"
+
+#: models.py:206
+msgid "name"
+msgstr "nazwa"
+
+#: models.py:210
+msgid "theme"
+msgstr "motyw"
+
+#: models.py:211
+msgid "themes"
+msgstr "motywy"
+
+#: views.py:241
+#, python-format
+msgid "Slug already used for %s"
+msgstr "Slug taki sam jak dla pliku %s"
+
+#: views.py:243
+msgid "Slug already used in repository."
+msgstr "Dokument o tym slugu już istnieje w repozytorium."
+
+#: views.py:249
+msgid "File should be UTF-8 encoded."
+msgstr "Plik powinien mieÄ kodowanie UTF-8."
+
+#: views.py:655
+msgid "Tag added"
+msgstr "Dodano tag"
+
+#: views.py:677
+msgid "Revision marked"
+msgstr "Wersja oznaczona"
+
+#: views.py:679
+msgid "Nothing changed"
+msgstr "Nic nie ulegÅo zmianie"
+
+#: templates/wiki/base.html:9
+msgid "Platforma Redakcyjna"
+msgstr ""
+
+#: templates/wiki/book_append_to.html:8
+msgid "Append book"
+msgstr "DoÅÄ
cz ksiÄ
żkÄ"
+
+#: templates/wiki/book_detail.html:6
+#: templates/wiki/book_detail.html.py:46
+msgid "edit"
+msgstr "edytuj"
+
+#: templates/wiki/book_detail.html:16
+msgid "add basic document structure"
+msgstr "dodaj podstawowÄ
 strukturÄ dokumentu"
+
+#: templates/wiki/book_detail.html:20
+msgid "change master tag to"
+msgstr "zmieÅ tak master na"
+
+#: templates/wiki/book_detail.html:24
+msgid "add begin trimming tag"
+msgstr "dodaj poczÄ
tkowy ogranicznik"
+
+#: templates/wiki/book_detail.html:28
+msgid "add end trimming tag"
+msgstr "dodaj koÅcowy ogranicznik"
+
+#: templates/wiki/book_detail.html:34
+msgid "unstructured text"
+msgstr "tekst bez struktury"
+
+#: templates/wiki/book_detail.html:38
+msgid "unknown XML"
+msgstr "nieznany XML"
+
+#: templates/wiki/book_detail.html:42
+msgid "broken document"
+msgstr "uszkodzony dokument"
+
+#: templates/wiki/book_detail.html:60
+msgid "Apply fixes"
+msgstr "Wykonaj zmiany"
+
+#: templates/wiki/book_detail.html:66
+msgid "Append to other book"
+msgstr "DoÅÄ
cz do innej ksiÄ
żki"
+
+#: templates/wiki/book_detail.html:68
+msgid "Last published"
+msgstr "Ostatnio opublikowano"
+
+#: templates/wiki/book_detail.html:72
+msgid "Full XML"
+msgstr "PeÅny XML"
+
+#: templates/wiki/book_detail.html:73
+msgid "HTML version"
+msgstr "Wersja HTML"
+
+#: templates/wiki/book_detail.html:74
+msgid "TXT version"
+msgstr "Wersja TXT"
+
+#: templates/wiki/book_detail.html:76
+msgid "EPUB version"
+msgstr "Wersja EPUB"
+
+#: templates/wiki/book_detail.html:77
+msgid "PDF version"
+msgstr "Wersja PDF"
+
+#: templates/wiki/book_detail.html:90
+#: templates/wiki/tabs/summary_view.html:30
+msgid "Publish"
+msgstr "Opublikuj"
+
+#: templates/wiki/book_detail.html:94
+msgid "This book cannot be published yet"
+msgstr "Ta ksiÄ
żka nie może jeszcze zostaÄ opublikowana"
+
+#: templates/wiki/book_edit.html:8
+#: templates/wiki/chunk_edit.html:8
+#: templates/wiki/document_details_base.html:35
+#: templates/wiki/pubmark_dialog.html:15
+#: templates/wiki/tag_dialog.html:15
+msgid "Save"
+msgstr "Zapisz"
+
+#: templates/wiki/chunk_add.html:8
+msgid "Add chunk"
+msgstr "Dodaj czÄÅÄ"
+
+#: templates/wiki/diff_table.html:5
+msgid "Old version"
+msgstr "Stara wersja"
+
+#: templates/wiki/diff_table.html:6
+msgid "New version"
+msgstr "Nowa wersja"
+
+#: templates/wiki/document_create_missing.html:8
+msgid "Create document"
+msgstr "Utwórz dokument"
+
+#: templates/wiki/document_details.html:32
+msgid "Click to open/close gallery"
+msgstr "Kliknij, aby (ro)zwinÄ
Ä galeriÄ"
+
+#: templates/wiki/document_details_base.html:31
+msgid "Help"
+msgstr "Pomoc"
+
+#: templates/wiki/document_details_base.html:33
+msgid "Version"
+msgstr "Wersja"
+
+#: templates/wiki/document_details_base.html:33
+msgid "Unknown"
+msgstr "nieznana"
+
+#: templates/wiki/document_details_base.html:36
+msgid "Save attempt in progress"
+msgstr "Trwa zapisywanie"
+
+#: templates/wiki/document_details_base.html:37
+msgid "There is a newer version of this document!"
+msgstr "Istnieje nowsza wersja tego dokumentu!"
+
+#: templates/wiki/document_list.html:31
+msgid "Clear filter"
+msgstr "WyczyÅÄ filtr"
+
+#: templates/wiki/document_list.html:46
+msgid "No books found."
+msgstr "Nie znaleziono ksiÄ
żek."
+
+#: templates/wiki/document_list.html:89
+msgid "Your last edited documents"
+msgstr "Twoje ostatnie edycje"
+
+#: templates/wiki/document_upload.html:8
+msgid "Bulk documents upload"
+msgstr "Hurtowe dodawanie dokumentów"
+
+#: templates/wiki/document_upload.html:11
+msgid "Please submit a ZIP with UTF-8 encoded XML files. Files not ending with .xml will be ignored."
+msgstr "ProszÄ wskazaÄ archiwum ZIP z plikami XML w kodowaniu UTF-8. Pliki nie koÅczÄ
ce siÄ na .xml zostanÄ
 zignorowane."
+
+#: templates/wiki/document_upload.html:16
+#: templatetags/wiki.py:36
+msgid "Upload"
+msgstr "ZaÅaduj"
+
+#: templates/wiki/document_upload.html:23
+msgid "There have been some errors. No files have been added to the repository."
+msgstr "WystÄ
piÅy bÅÄdy. Å»adne pliki nie zostaÅy dodane do repozytorium."
+
+#: templates/wiki/document_upload.html:24
+msgid "Offending files"
+msgstr "BÅÄdne pliki"
+
+#: templates/wiki/document_upload.html:32
+msgid "Correct files"
+msgstr "Poprawne pliki"
+
+#: templates/wiki/document_upload.html:43
+msgid "Files have been successfully uploaded to the repository."
+msgstr "Pliki zostaÅy dodane do repozytorium."
+
+#: templates/wiki/document_upload.html:44
+msgid "Uploaded files"
+msgstr "Dodane pliki"
+
+#: templates/wiki/document_upload.html:54
+msgid "Skipped files"
+msgstr "PominiÄte pliki"
+
+#: templates/wiki/document_upload.html:55
+msgid "Files skipped due to no .xml extension"
+msgstr "Pliki pominiÄte z powodu braku rozszerzenia .xml."
+
+#: templates/wiki/pubmark_dialog.html:16
+#: templates/wiki/revert_dialog.html:39
+#: templates/wiki/tag_dialog.html:16
+msgid "Cancel"
+msgstr "Anuluj"
+
+#: templates/wiki/revert_dialog.html:38
+msgid "Revert"
+msgstr "PrzywróÄ"
+
+#: templates/wiki/user_list.html:7
+#: templatetags/wiki.py:33
+msgid "Users"
+msgstr "Użytkownicy"
+
+#: templates/wiki/tabs/annotations_view.html:9
+msgid "all"
+msgstr "wszystkie"
+
+#: templates/wiki/tabs/annotations_view_item.html:3
+msgid "Annotations"
+msgstr "Przypisy"
+
+#: templates/wiki/tabs/gallery_view.html:7
+msgid "Previous"
+msgstr "Poprzednie"
+
+#: templates/wiki/tabs/gallery_view.html:13
+msgid "Next"
+msgstr "NastÄpne"
+
+#: templates/wiki/tabs/gallery_view.html:15
+msgid "Zoom in"
+msgstr "PowiÄksz"
+
+#: templates/wiki/tabs/gallery_view.html:16
+msgid "Zoom out"
+msgstr "Zmniejsz"
+
+#: templates/wiki/tabs/gallery_view_item.html:3
+msgid "Gallery"
+msgstr "Galeria"
+
+#: templates/wiki/tabs/history_view.html:5
+msgid "Compare versions"
+msgstr "Porównaj wersje"
+
+#: templates/wiki/tabs/history_view.html:7
+msgid "Mark for publishing"
+msgstr "Oznacz do publikacji"
+
+#: templates/wiki/tabs/history_view.html:9
+msgid "Revert document"
+msgstr "PrzywrÃ³Ä wersjÄ"
+
+#: templates/wiki/tabs/history_view.html:12
+msgid "View version"
+msgstr "Zobacz wersjÄ"
+
+#: templates/wiki/tabs/history_view_item.html:3
+msgid "History"
+msgstr "Historia"
+
+#: templates/wiki/tabs/search_view.html:3
+#: templates/wiki/tabs/search_view.html:5
+msgid "Search"
+msgstr "Szukaj"
+
+#: templates/wiki/tabs/search_view.html:8
+msgid "Replace with"
+msgstr "ZamieÅ na"
+
+#: templates/wiki/tabs/search_view.html:10
+msgid "Replace"
+msgstr "ZamieÅ"
+
+#: templates/wiki/tabs/search_view.html:13
+msgid "Options"
+msgstr "Opcje"
+
+#: templates/wiki/tabs/search_view.html:15
+msgid "Case sensitive"
+msgstr "Rozróżniaj wielkoÅÄ liter"
+
+#: templates/wiki/tabs/search_view.html:17
+msgid "From cursor"
+msgstr "Zacznij od kursora"
+
+#: templates/wiki/tabs/search_view_item.html:3
+msgid "Search and replace"
+msgstr "Znajdź i zamieÅ"
+
+#: templates/wiki/tabs/source_editor_item.html:5
+msgid "Source code"
+msgstr "Kod źródÅowy"
+
+#: templates/wiki/tabs/summary_view.html:9
+msgid "Title"
+msgstr "TytuÅ"
+
+#: templates/wiki/tabs/summary_view.html:14
+msgid "Document ID"
+msgstr "ID dokumentu"
+
+#: templates/wiki/tabs/summary_view.html:18
+msgid "Current version"
+msgstr "Aktualna wersja"
+
+#: templates/wiki/tabs/summary_view.html:21
+msgid "Last edited by"
+msgstr "Ostatnio edytowane przez"
+
+#: templates/wiki/tabs/summary_view.html:25
+msgid "Link to gallery"
+msgstr "Link do galerii"
+
+#: templates/wiki/tabs/summary_view_item.html:3
+msgid "Summary"
+msgstr "Podsumowanie"
+
+#: templates/wiki/tabs/wysiwyg_editor.html:9
+msgid "Insert theme"
+msgstr "Wstaw motyw"
+
+#: templates/wiki/tabs/wysiwyg_editor.html:12
+msgid "Insert annotation"
+msgstr "Wstaw przypis"
+
+#: templates/wiki/tabs/wysiwyg_editor_item.html:3
+msgid "Visual editor"
+msgstr "Edytor wizualny"
+
+#: templatetags/wiki.py:30
+msgid "Assigned to me"
+msgstr "Przypisane do mnie"
+
+#: templatetags/wiki.py:32
+msgid "Unassigned"
+msgstr "Nie przypisane"
+
+#: templatetags/wiki.py:34
+msgid "All"
+msgstr "Wszystkie"
+
+#: templatetags/wiki.py:35
+msgid "Add"
+msgstr "Dodaj"
+
+#: templatetags/wiki.py:39
+msgid "Admin"
+msgstr "Administracja"
+
+#~ msgid "First correction"
+#~ msgstr "Autokorekta"
+
+#~ msgid "Tagging"
+#~ msgstr "Tagowanie"
+
+#~ msgid "Initial Proofreading"
+#~ msgstr "Korekta"
+
+#~ msgid "Annotation Proofreading"
+#~ msgstr "Sprawdzenie przypisów źródÅa"
+
+#~ msgid "Modernisation"
+#~ msgstr "UwspóÅczeÅnienie"
+
+#~ msgid "Themes"
+#~ msgstr "Motywy"
+
+#~ msgid "Editor's Proofreading"
+#~ msgstr "Ostateczna redakcja literacka"
+
+#~ msgid "Technical Editor's Proofreading"
+#~ msgstr "Ostateczna redakcja techniczna"
+
+#~ msgid "Finished stage: %s"
+#~ msgstr "UkoÅczony etap: %s"
+
+#~ msgid "Refresh"
+#~ msgstr "OdÅwież"
+
+#~ msgid "Insert special character"
+#~ msgstr "Wstaw znak specjalny"
diff --git a/apps/catalogue/management/__init__.py b/apps/catalogue/management/__init__.py
new file mode 100755
index 00000000..e69de29b
diff --git a/apps/catalogue/management/commands/__init__.py b/apps/catalogue/management/commands/__init__.py
new file mode 100755
index 00000000..e69de29b
diff --git a/apps/catalogue/management/commands/assign_from_redmine.py b/apps/catalogue/management/commands/assign_from_redmine.py
new file mode 100755
index 00000000..9f7b12d4
--- /dev/null
+++ b/apps/catalogue/management/commands/assign_from_redmine.py
@@ -0,0 +1,153 @@
+# -*- coding: utf-8 -*-
+
+import csv
+from optparse import make_option
+import re
+import sys
+import urllib
+import urllib2
+
+from django.contrib.auth.models import User
+from django.core.management.base import BaseCommand
+from django.core.management.color import color_style
+from django.db import transaction
+
+from slughifi import slughifi
+from catalogue.models import Chunk
+
+
+REDMINE_CSV = 'http://redmine.nowoczesnapolska.org.pl/projects/wl-publikacje/issues.csv'
+REDAKCJA_URL = 'http://redakcja.wolnelektury.pl/documents/'
+
+
+class Command(BaseCommand):
+    option_list = BaseCommand.option_list + (
+        make_option('-r', '--redakcja', dest='redakcja', metavar='URL',
+            help='Base URL of Redakcja documents',
+            default=REDAKCJA_URL),
+        make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
+            help='Less output'),
+        make_option('-f', '--force', action='store_true', dest='force', default=False,
+            help='Force assignment overwrite'),
+    )
+    help = 'Imports ticket assignments from Redmine.'
+    args = '[redmine-csv-url]'
+
+    def handle(self, *redmine_csv, **options):
+
+        self.style = color_style()
+
+        redakcja = options.get('redakcja')
+        verbose = options.get('verbose')
+        force = options.get('force')
+
+        if not redmine_csv:
+            if verbose:
+                print "Using default Redmine CSV URL:", REDMINE_CSV
+            redmine_csv = REDMINE_CSV
+
+        # Start transaction management.
+        transaction.commit_unless_managed()
+        transaction.enter_transaction_management()
+        transaction.managed(True)
+
+        redakcja_link = re.compile(re.escape(redakcja) + r'([-_.:?&%/a-zA-Z0-9]*)')
+
+        all_tickets = 0
+        all_chunks = 0
+        done_tickets = 0
+        done_chunks = 0
+        empty_users = 0
+        unknown_users = {}
+        unknown_books = []
+        forced = []
+
+        if verbose:
+            print 'Downloading CSV file'
+        for r in csv.reader(urllib2.urlopen(redmine_csv)):
+            if r[0] == '#':
+                continue
+            all_tickets += 1
+
+            username = r[6]
+            if not username:
+                if verbose:
+                    print "Empty user, skipping"
+                empty_users += 1
+                continue
+
+            first_name, last_name = unicode(username, 'utf-8').rsplit(u' ', 1)
+            try:
+                user = User.objects.get(first_name=first_name, last_name=last_name)
+            except User.DoesNotExist:
+                print self.style.ERROR('Unknown user: ' + username)
+                unknown_users.setdefault(username, 0)
+                unknown_users[username] += 1
+                continue
+
+            ticket_done = False
+            for fname in redakcja_link.findall(r[-1]):
+                fname = unicode(urllib.unquote(fname), 'utf-8', 'ignore')
+                if fname.endswith('.xml'):
+                    fname = fname[:-4]
+                fname = fname.replace(' ', '_')
+                fname = slughifi(fname)
+
+                chunks = Chunk.objects.filter(book__slug=fname)
+                if not chunks:
+                    print self.style.ERROR('Unknown book: ' + fname)
+                    unknown_books.append(fname)
+                    continue
+                all_chunks += chunks.count()
+
+                for chunk in chunks:
+                    if chunk.user:
+                        if chunk.user == user:
+                            continue
+                        else:
+                            forced.append((chunk, chunk.user, user))
+                            if force:
+                                print self.style.WARNING(
+                                    '%s assigned to %s, forcing change to %s.' %
+                                    (chunk.pretty_name(), chunk.user, user))
+                            else:
+                                print self.style.WARNING(
+                                    '%s assigned to %s not to %s, skipping.' %
+                                    (chunk.pretty_name(), chunk.user, user))
+                                continue
+                    chunk.user = user
+                    chunk.save()
+                    ticket_done = True
+                    done_chunks += 1
+
+            if ticket_done:
+                done_tickets += 1
+
+
+        # Print results
+        print
+        print "Results:"
+        print "Assignments imported from %d/%d tickets to %d/%d relevalt chunks." % (
+                done_tickets, all_tickets, done_chunks, all_chunks)
+        if empty_users:
+            print "%d tickets were unassigned." % empty_users
+        if forced:
+            print "%d assignments conficts (%s):" % (
+                len(forced), "changed" if force else "left")
+            for chunk, orig, user in forced:
+                print "  %s: \t%s \t->  %s" % (
+                    chunk.pretty_name(), orig.username, user.username)
+        if unknown_books:
+            print "%d unknown books:" % len(unknown_books)
+            for fname in unknown_books:
+                print "  %s" % fname
+        if unknown_users:
+            print "%d unknown users:" % len(unknown_users)
+            for name in unknown_users:
+                print "  %s (%d tickets)" % (name, unknown_users[name])
+        print
+
+
+        transaction.commit()
+        transaction.leave_transaction_management()
+
diff --git a/apps/catalogue/migrations/0001_initial.py b/apps/catalogue/migrations/0001_initial.py
new file mode 100644
index 00000000..4ebde478
--- /dev/null
+++ b/apps/catalogue/migrations/0001_initial.py
@@ -0,0 +1,365 @@
+# encoding: utf-8
+import datetime
+import os.path
+import cPickle
+import re
+import urllib
+
+from django.conf import settings
+from django.db import models
+from mercurial import mdiff, hg, ui
+from south.db import db
+from south.v2 import SchemaMigration
+
+from slughifi import slughifi
+
+META_REGEX = re.compile(r'\s*', re.DOTALL | re.MULTILINE)
+STAGE_TAGS_RE = re.compile(r'^#stage-finished: (.*)$', re.MULTILINE)
+AUTHOR_RE = re.compile(r'\s*(.*?)\s*<(.*)>\s*')
+
+
+def urlunquote(url):
+    """Unqotes URL
+
+    # >>> urlunquote('Za%C5%BC%C3%B3%C5%82%C4%87_g%C4%99%C5%9Bl%C4%85_ja%C5%BA%C5%84')
+    # u'Za\u017c\xf3\u0142\u0107_g\u0119\u015bl\u0105 ja\u017a\u0144'
+    """
+    return unicode(urllib.unquote(url), 'utf-8', 'ignore')
+
+
+def split_name(name):
+    parts = name.split('__')
+    return parts
+
+
+def file_to_title(fname):
+    """ Returns a title-like version of a filename. """
+    parts = (p.replace('_', ' ').title() for p in fname.split('__'))
+    return ' / '.join(parts)
+
+
+def make_patch(src, dst):
+    if isinstance(src, unicode):
+        src = src.encode('utf-8')
+    if isinstance(dst, unicode):
+        dst = dst.encode('utf-8')
+    return cPickle.dumps(mdiff.textdiff(src, dst))
+
+
+def plain_text(text):
+    return re.sub(META_REGEX, '', text, 1)
+
+
+def gallery(slug, text):
+    result = {}
+
+    m = re.match(META_REGEX, text)
+    if m:
+        for line in m.group(1).split('\n'):
+            try:
+                k, v = line.split(':', 1)
+                result[k.strip()] = v.strip()
+            except ValueError:
+                continue
+
+    gallery = result.get('gallery', slughifi(slug))
+
+    if gallery.startswith('/'):
+        gallery = os.path.basename(gallery)
+
+    return gallery
+
+
+def migrate_file_from_hg(orm, fname, entry):
+    fname = urlunquote(fname)
+    print fname
+    if fname.endswith('.xml'):
+        fname = fname[:-4]
+    title = file_to_title(fname)
+    fname = slughifi(fname)
+    # create all the needed objects
+    # what if it already exists?
+    book = orm.Book.objects.create(
+        title=title,
+        slug=fname)
+    chunk = orm.Chunk.objects.create(
+        book=book,
+        number=1,
+        slug='1')
+    head = orm.ChunkChange.objects.create(
+        tree=chunk,
+        revision=-1,
+        patch=make_patch('', ''),
+        created_at=datetime.datetime.fromtimestamp(entry.filectx(0).date()[0]),
+        description=''
+        )
+    chunk.head = head
+    try:
+        chunk.stage = orm.ChunkTag.objects.order_by('ordering')[0]
+    except IndexError:
+        chunk.stage = None
+    old_data = ''
+
+    maxrev = entry.filerev()
+    gallery_link = None
+    
+    for rev in xrange(maxrev + 1):
+        fctx = entry.filectx(rev)
+        data = fctx.data()
+        gallery_link = gallery(fname, data)
+        data = plain_text(data)
+
+        # get tags from description
+        description = fctx.description().decode("utf-8", 'replace')
+        tags = STAGE_TAGS_RE.findall(description)
+        tags = [orm.ChunkTag.objects.get(slug=slug.strip()) for slug in tags]
+
+        if tags:
+            max_ordering = max(tags, key=lambda x: x.ordering).ordering
+            try:
+                chunk.stage = orm.ChunkTag.objects.filter(ordering__gt=max_ordering).order_by('ordering')[0]
+            except IndexError:
+                chunk.stage = None
+
+        description = STAGE_TAGS_RE.sub('', description)
+
+        author = author_name = author_email = None
+        author_desc = fctx.user().decode("utf-8", 'replace')
+        m = AUTHOR_RE.match(author_desc)
+        if m:
+            try:
+                author = orm['auth.User'].objects.get(username=m.group(1), email=m.group(2))
+            except orm['auth.User'].DoesNotExist:
+                author_name = m.group(1)
+                author_email = m.group(2)
+        else:
+            author_name = author_desc
+
+        head = orm.ChunkChange.objects.create(
+            tree=chunk,
+            revision=rev + 1,
+            patch=make_patch(old_data, data),
+            created_at=datetime.datetime.fromtimestamp(fctx.date()[0]),
+            description=description,
+            author=author,
+            author_name=author_name,
+            author_email=author_email,
+            parent=chunk.head
+            )
+        head.tags = tags
+        chunk.head = head
+        old_data = data
+
+    chunk.save()
+    if gallery_link:
+        book.gallery = gallery_link
+        book.save()
+
+
+def migrate_from_hg(orm):
+    try:
+        hg_path = settings.WIKI_REPOSITORY_PATH
+    except:
+        pass
+
+    print 'migrate from', hg_path
+    repo = hg.repository(ui.ui(), hg_path)
+    tip = repo['tip']
+    for fname in tip:
+        if fname.startswith('.'):
+            continue
+        migrate_file_from_hg(orm, fname, tip[fname])
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        
+        # Adding model 'Book'
+        db.create_table('catalogue_book', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('title', self.gf('django.db.models.fields.CharField')(max_length=255, db_index=True)),
+            ('slug', self.gf('django.db.models.fields.SlugField')(unique=True, max_length=128, db_index=True)),
+            ('gallery', self.gf('django.db.models.fields.CharField')(max_length=255, blank=True)),
+            ('parent', self.gf('django.db.models.fields.related.ForeignKey')(blank=True, related_name='children', null=True, to=orm['catalogue.Book'])),
+            ('parent_number', self.gf('django.db.models.fields.IntegerField')(db_index=True, null=True, blank=True)),
+            ('last_published', self.gf('django.db.models.fields.DateTimeField')(null=True, db_index=True)),
+        ))
+        db.send_create_signal('catalogue', ['Book'])
+
+        # Adding model 'Chunk'
+        db.create_table('catalogue_chunk', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('creator', self.gf('django.db.models.fields.related.ForeignKey')(blank=True, related_name='created_documents', null=True, to=orm['auth.User'])),
+            ('user', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['auth.User'], null=True, blank=True)),
+            ('book', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['catalogue.Book'])),
+            ('number', self.gf('django.db.models.fields.IntegerField')()),
+            ('slug', self.gf('django.db.models.fields.SlugField')(max_length=50, db_index=True)),
+            ('comment', self.gf('django.db.models.fields.CharField')(max_length=255, blank=True)),
+            ('stage', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['catalogue.ChunkTag'], null=True, blank=True)),
+            ('head', self.gf('django.db.models.fields.related.ForeignKey')(default=None, to=orm['catalogue.ChunkChange'], null=True, blank=True)),
+        ))
+        db.send_create_signal('catalogue', ['Chunk'])
+
+        # Adding unique constraint on 'Chunk', fields ['book', 'number']
+        db.create_unique('catalogue_chunk', ['book_id', 'number'])
+
+        # Adding unique constraint on 'Chunk', fields ['book', 'slug']
+        db.create_unique('catalogue_chunk', ['book_id', 'slug'])
+
+        # Adding model 'ChunkTag'
+        db.create_table('catalogue_chunktag', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('name', self.gf('django.db.models.fields.CharField')(max_length=64)),
+            ('slug', self.gf('django.db.models.fields.SlugField')(db_index=True, max_length=64, unique=True, null=True, blank=True)),
+            ('ordering', self.gf('django.db.models.fields.IntegerField')()),
+        ))
+        db.send_create_signal('catalogue', ['ChunkTag'])
+
+        # Adding model 'ChunkChange'
+        db.create_table('catalogue_chunkchange', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('author', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['auth.User'], null=True, blank=True)),
+            ('author_name', self.gf('django.db.models.fields.CharField')(max_length=128, null=True, blank=True)),
+            ('author_email', self.gf('django.db.models.fields.CharField')(max_length=128, null=True, blank=True)),
+            ('patch', self.gf('django.db.models.fields.TextField')(blank=True)),
+            ('revision', self.gf('django.db.models.fields.IntegerField')(db_index=True)),
+            ('parent', self.gf('django.db.models.fields.related.ForeignKey')(default=None, related_name='children', null=True, blank=True, to=orm['catalogue.ChunkChange'])),
+            ('merge_parent', self.gf('django.db.models.fields.related.ForeignKey')(default=None, related_name='merge_children', null=True, blank=True, to=orm['catalogue.ChunkChange'])),
+            ('description', self.gf('django.db.models.fields.TextField')(default='', blank=True)),
+            ('created_at', self.gf('django.db.models.fields.DateTimeField')(default=datetime.datetime.now, db_index=True)),
+            ('publishable', self.gf('django.db.models.fields.BooleanField')(default=False)),
+            ('tree', self.gf('django.db.models.fields.related.ForeignKey')(related_name='change_set', to=orm['catalogue.Chunk'])),
+        ))
+        db.send_create_signal('catalogue', ['ChunkChange'])
+
+        # Adding unique constraint on 'ChunkChange', fields ['tree', 'revision']
+        db.create_unique('catalogue_chunkchange', ['tree_id', 'revision'])
+
+        # Adding M2M table for field tags on 'ChunkChange'
+        db.create_table('catalogue_chunkchange_tags', (
+            ('id', models.AutoField(verbose_name='ID', primary_key=True, auto_created=True)),
+            ('chunkchange', models.ForeignKey(orm['catalogue.chunkchange'], null=False)),
+            ('chunktag', models.ForeignKey(orm['catalogue.chunktag'], null=False))
+        ))
+        db.create_unique('catalogue_chunkchange_tags', ['chunkchange_id', 'chunktag_id'])
+
+        if not db.dry_run:
+            from django.core.management import call_command
+            call_command("loaddata", "stages.json")
+
+            migrate_from_hg(orm)
+
+
+    def backwards(self, orm):
+        
+        # Removing unique constraint on 'ChunkChange', fields ['tree', 'revision']
+        db.delete_unique('catalogue_chunkchange', ['tree_id', 'revision'])
+
+        # Removing unique constraint on 'Chunk', fields ['book', 'slug']
+        db.delete_unique('catalogue_chunk', ['book_id', 'slug'])
+
+        # Removing unique constraint on 'Chunk', fields ['book', 'number']
+        db.delete_unique('catalogue_chunk', ['book_id', 'number'])
+
+        # Deleting model 'Book'
+        db.delete_table('catalogue_book')
+
+        # Deleting model 'Chunk'
+        db.delete_table('catalogue_chunk')
+
+        # Deleting model 'ChunkTag'
+        db.delete_table('catalogue_chunktag')
+
+        # Deleting model 'ChunkChange'
+        db.delete_table('catalogue_chunkchange')
+
+        # Removing M2M table for field tags on 'ChunkChange'
+        db.delete_table('catalogue_chunkchange_tags')
+
+
+    models = {
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'catalogue.book': {
+            'Meta': {'ordering': "['parent_number', 'title']", 'object_name': 'Book'},
+            'gallery': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'last_published': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'db_index': 'True'}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'children'", 'null': 'True', 'to': "orm['catalogue.Book']"}),
+            'parent_number': ('django.db.models.fields.IntegerField', [], {'db_index': 'True', 'null': 'True', 'blank': 'True'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '128', 'db_index': 'True'}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'})
+        },
+        'catalogue.chunk': {
+            'Meta': {'ordering': "['number']", 'unique_together': "[['book', 'number'], ['book', 'slug']]", 'object_name': 'Chunk'},
+            'book': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.Book']"}),
+            'comment': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
+            'creator': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'created_documents'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'head': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['catalogue.ChunkChange']", 'null': 'True', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'number': ('django.db.models.fields.IntegerField', [], {}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '50', 'db_index': 'True'}),
+            'stage': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.ChunkTag']", 'null': 'True', 'blank': 'True'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'})
+        },
+        'catalogue.chunkchange': {
+            'Meta': {'ordering': "('created_at',)", 'unique_together': "(['tree', 'revision'],)", 'object_name': 'ChunkChange'},
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'author_email': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'author_name': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'created_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now', 'db_index': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'merge_parent': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'merge_children'", 'null': 'True', 'blank': 'True', 'to': "orm['catalogue.ChunkChange']"}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'children'", 'null': 'True', 'blank': 'True', 'to': "orm['catalogue.ChunkChange']"}),
+            'patch': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'publishable': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'revision': ('django.db.models.fields.IntegerField', [], {'db_index': 'True'}),
+            'tags': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'change_set'", 'symmetrical': 'False', 'to': "orm['catalogue.ChunkTag']"}),
+            'tree': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'change_set'", 'to': "orm['catalogue.Chunk']"})
+        },
+        'catalogue.chunktag': {
+            'Meta': {'ordering': "['ordering']", 'object_name': 'ChunkTag'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '64'}),
+            'ordering': ('django.db.models.fields.IntegerField', [], {}),
+            'slug': ('django.db.models.fields.SlugField', [], {'db_index': 'True', 'max_length': '64', 'unique': 'True', 'null': 'True', 'blank': 'True'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        }
+    }
+
+    complete_apps = ['catalogue']
diff --git a/apps/catalogue/migrations/0002_auto__add_bookpublishrecord__add_chunkpublishrecord__del_field_book_la.py b/apps/catalogue/migrations/0002_auto__add_bookpublishrecord__add_chunkpublishrecord__del_field_book_la.py
new file mode 100644
index 00000000..0c8efc08
--- /dev/null
+++ b/apps/catalogue/migrations/0002_auto__add_bookpublishrecord__add_chunkpublishrecord__del_field_book_la.py
@@ -0,0 +1,140 @@
+# encoding: utf-8
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        
+        # Adding model 'BookPublishRecord'
+        db.create_table('catalogue_bookpublishrecord', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('book', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['catalogue.Book'])),
+            ('timestamp', self.gf('django.db.models.fields.DateTimeField')(auto_now_add=True, blank=True)),
+            ('user', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['auth.User'])),
+        ))
+        db.send_create_signal('catalogue', ['BookPublishRecord'])
+
+        # Adding model 'ChunkPublishRecord'
+        db.create_table('catalogue_chunkpublishrecord', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('book_record', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['catalogue.BookPublishRecord'])),
+            ('change', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['catalogue.ChunkChange'])),
+        ))
+        db.send_create_signal('catalogue', ['ChunkPublishRecord'])
+
+        # Deleting field 'Book.last_published'
+        db.delete_column('catalogue_book', 'last_published')
+
+
+    def backwards(self, orm):
+        
+        # Deleting model 'BookPublishRecord'
+        db.delete_table('catalogue_bookpublishrecord')
+
+        # Deleting model 'ChunkPublishRecord'
+        db.delete_table('catalogue_chunkpublishrecord')
+
+        # Adding field 'Book.last_published'
+        db.add_column('catalogue_book', 'last_published', self.gf('django.db.models.fields.DateTimeField')(null=True, db_index=True), keep_default=False)
+
+
+    models = {
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'catalogue.book': {
+            'Meta': {'ordering': "['parent_number', 'title']", 'object_name': 'Book'},
+            'gallery': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'children'", 'null': 'True', 'to': "orm['catalogue.Book']"}),
+            'parent_number': ('django.db.models.fields.IntegerField', [], {'db_index': 'True', 'null': 'True', 'blank': 'True'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '128', 'db_index': 'True'}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '255', 'db_index': 'True'})
+        },
+        'catalogue.bookpublishrecord': {
+            'Meta': {'ordering': "['-timestamp']", 'object_name': 'BookPublishRecord'},
+            'book': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.Book']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'timestamp': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
+        },
+        'catalogue.chunk': {
+            'Meta': {'ordering': "['number']", 'unique_together': "[['book', 'number'], ['book', 'slug']]", 'object_name': 'Chunk'},
+            'book': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.Book']"}),
+            'comment': ('django.db.models.fields.CharField', [], {'max_length': '255', 'blank': 'True'}),
+            'creator': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'created_documents'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'head': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['catalogue.ChunkChange']", 'null': 'True', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'number': ('django.db.models.fields.IntegerField', [], {}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '50', 'db_index': 'True'}),
+            'stage': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.ChunkTag']", 'null': 'True', 'blank': 'True'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'})
+        },
+        'catalogue.chunkchange': {
+            'Meta': {'ordering': "('created_at',)", 'unique_together': "(['tree', 'revision'],)", 'object_name': 'ChunkChange'},
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'author_email': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'author_name': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'created_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now', 'db_index': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'merge_parent': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'merge_children'", 'null': 'True', 'blank': 'True', 'to': "orm['catalogue.ChunkChange']"}),
+            'parent': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'children'", 'null': 'True', 'blank': 'True', 'to': "orm['catalogue.ChunkChange']"}),
+            'patch': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'publishable': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'revision': ('django.db.models.fields.IntegerField', [], {'db_index': 'True'}),
+            'tags': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'change_set'", 'symmetrical': 'False', 'to': "orm['catalogue.ChunkTag']"}),
+            'tree': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'change_set'", 'to': "orm['catalogue.Chunk']"})
+        },
+        'catalogue.chunkpublishrecord': {
+            'Meta': {'object_name': 'ChunkPublishRecord'},
+            'book_record': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.BookPublishRecord']"}),
+            'change': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['catalogue.ChunkChange']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
+        },
+        'catalogue.chunktag': {
+            'Meta': {'ordering': "['ordering']", 'object_name': 'ChunkTag'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '64'}),
+            'ordering': ('django.db.models.fields.IntegerField', [], {}),
+            'slug': ('django.db.models.fields.SlugField', [], {'db_index': 'True', 'max_length': '64', 'unique': 'True', 'null': 'True', 'blank': 'True'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        }
+    }
+
+    complete_apps = ['catalogue']
diff --git a/apps/catalogue/migrations/__init__.py b/apps/catalogue/migrations/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
new file mode 100644
index 00000000..f9686547
--- /dev/null
+++ b/apps/catalogue/models.py
@@ -0,0 +1,235 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from django.contrib.auth.models import User
+from django.core.urlresolvers import reverse
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
+from dvcs import models as dvcs_models
+from catalogue.xml_tools import compile_text
+
+import logging
+logger = logging.getLogger("fnp.catalogue")
+
+
+class Book(models.Model):
+    """ A document edited on the wiki """
+
+    title = models.CharField(_('title'), max_length=255, db_index=True)
+    slug = models.SlugField(_('slug'), max_length=128, unique=True, db_index=True)
+    gallery = models.CharField(_('scan gallery name'), max_length=255, blank=True)
+
+    parent = models.ForeignKey('self', null=True, blank=True, verbose_name=_('parent'), related_name="children")
+    parent_number = models.IntegerField(_('parent number'), null=True, blank=True, db_index=True)
+
+    class NoTextError(BaseException):
+        pass
+
+    class Meta:
+        ordering = ['parent_number', 'title']
+        verbose_name = _('book')
+        verbose_name_plural = _('books')
+        permissions = [('can_pubmark', 'Can mark for publishing')]
+
+    def __unicode__(self):
+        return self.title
+
+    def get_absolute_url(self):
+        return reverse("catalogue_book", args=[self.slug])
+
+    @classmethod
+    def create(cls, creator=None, text=u'', *args, **kwargs):
+        """
+            >>> Book.create(slug='x', text='abc').materialize()
+            'abc'
+        """
+        instance = cls(*args, **kwargs)
+        instance.save()
+        instance[0].commit(author=creator, text=text)
+        return instance
+
+    def __iter__(self):
+        return iter(self.chunk_set.all())
+
+    def __getitem__(self, chunk):
+        return self.chunk_set.all()[chunk]
+
+    def __len__(self):
+        return self.chunk_set.count()
+
+    def __nonzero__(self):
+        """
+            Necessary so that __len__ isn't used for bool evaluation.
+        """
+        return True
+
+    def get_current_changes(self, publishable=True):
+        """
+            Returns a list containing one Change for every Chunk in the Book.
+            Takes the most recent revision (publishable, if set).
+            Throws an error, if a proper revision is unavailable for a Chunk.
+        """
+        if publishable:
+            changes = [chunk.publishable() for chunk in self]
+        else:
+            changes = [chunk.head for chunk in self]
+        if None in changes:
+            raise self.NoTextError('Some chunks have no available text.')
+        return changes
+
+    def materialize(self, publishable=False, changes=None):
+        """ 
+            Get full text of the document compiled from chunks.
+            Takes the current versions of all texts
+            or versions most recently tagged for publishing,
+            or a specified iterable changes.
+        """
+        if changes is None:
+            changes = self.get_current_changes(publishable)
+        return compile_text(change.materialize() for change in changes)
+
+    def publishable(self):
+        if not self.chunk_set.exists():
+            return False
+        for chunk in self:
+            if not chunk.publishable():
+                return False
+        return True
+
+    def publish(self, user):
+        """
+            Publishes a book on behalf of a (local) user.
+        """
+        from apiclient import api_call
+
+        changes = self.get_current_changes(publishable=True)
+        book_xml = book.materialize(changes=changes)
+        #api_call(user, "books", {"book_xml": book_xml})
+        # record the publish
+        br = BookPublishRecord.objects.create(book=self, user=user)
+        for c in changes:
+            ChunkPublishRecord.objects.create(book_record=br, change=c)
+
+    def make_chunk_slug(self, proposed):
+        """ 
+            Finds a chunk slug not yet used in the book.
+        """
+        slugs = set(c.slug for c in self)
+        i = 1
+        new_slug = proposed
+        while new_slug in slugs:
+            new_slug = "%s-%d" % (proposed, i)
+            i += 1
+        return new_slug
+
+    def append(self, other):
+        number = self[len(self) - 1].number + 1
+        single = len(other) == 1
+        for chunk in other:
+            # move chunk to new book
+            chunk.book = self
+            chunk.number = number
+
+            # try some title guessing
+            if other.title.startswith(self.title):
+                other_title_part = other.title[len(self.title):].lstrip(' /')
+            else:
+                other_title_part = other.title
+
+            if single:
+                # special treatment for appending one-parters:
+                # just use the guessed title and original book slug
+                chunk.comment = other_title_part
+                if other.slug.startswith(self.slug):
+                    chunk_slug = other.slug[len(self.slug):].lstrip('-_')
+                else:
+                    chunk_slug = other.slug
+                chunk.slug = self.make_chunk_slug(chunk_slug)
+            else:
+                chunk.comment = "%s, %s" % (other_title_part, chunk.comment)
+                chunk.slug = self.make_chunk_slug(chunk.slug)
+            chunk.save()
+            number += 1
+        other.delete()
+
+    @staticmethod
+    def listener_create(sender, instance, created, **kwargs):
+        if created:
+            instance.chunk_set.create(number=1, slug='1')
+
+models.signals.post_save.connect(Book.listener_create, sender=Book)
+
+
+class Chunk(dvcs_models.Document):
+    """ An editable chunk of text. Every Book text is divided into chunks. """
+
+    book = models.ForeignKey(Book, editable=False)
+    number = models.IntegerField()
+    slug = models.SlugField()
+    comment = models.CharField(max_length=255, blank=True)
+
+    class Meta:
+        unique_together = [['book', 'number'], ['book', 'slug']]
+        ordering = ['number']
+
+    def __unicode__(self):
+        return "%d-%d: %s" % (self.book_id, self.number, self.comment)
+
+    def get_absolute_url(self):
+        return reverse("wiki_editor", args=[self.book.slug, self.slug])
+
+    @classmethod
+    def get(cls, slug, chunk=None):
+        if chunk is None:
+            return cls.objects.get(book__slug=slug, number=1)
+        else:
+            return cls.objects.get(book__slug=slug, slug=chunk)
+
+    def pretty_name(self, book_length=None):
+        title = self.book.title
+        if self.comment:
+            title += ", %s" % self.comment
+        if book_length > 1:
+            title += " (%d/%d)" % (self.number, book_length)
+        return title
+
+    def split(self, slug, comment='', creator=None):
+        """ Create an empty chunk after this one """
+        self.book.chunk_set.filter(number__gt=self.number).update(
+                number=models.F('number')+1)
+        new_chunk = self.book.chunk_set.create(number=self.number+1,
+                creator=creator, slug=slug, comment=comment)
+        return new_chunk
+
+    @staticmethod
+    def listener_saved(sender, instance, created, **kwargs):
+        if instance.book:
+            # save book so that its _list_html is reset
+            instance.book.save()
+
+models.signals.post_save.connect(Chunk.listener_saved, sender=Chunk)
+
+
+class BookPublishRecord(models.Model):
+    """
+        A record left after publishing a Book.
+    """
+
+    book = models.ForeignKey(Book)
+    timestamp = models.DateTimeField(auto_now_add=True)
+    user = models.ForeignKey(User)
+
+    class Meta:
+        ordering = ['-timestamp']
+
+
+class ChunkPublishRecord(models.Model):
+    """
+        BookPublishRecord details for each Chunk.
+    """
+
+    book_record = models.ForeignKey(BookPublishRecord)
+    change = models.ForeignKey(Chunk.change_model)
diff --git a/apps/catalogue/templates/catalogue/base.html b/apps/catalogue/templates/catalogue/base.html
new file mode 100644
index 00000000..4ba8a0ea
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/base.html
@@ -0,0 +1,49 @@
+{% load compressed i18n %}
+{% load catalogue %}
+
+
+
+    
+    {% compressed_css 'listing' %}
+    
+    {% block title %}{% trans "Platforma Redakcyjna" %}{% endblock title %}
+
+
+
+
+
+    
+         +
+    
+
+    
+        {% main_tabs %}
+    
+
+    
+        {% include "registration/head_login.html" %}
+    
+
+    
+
+
+{% block content %}
+
+	{% block leftcolumn %}
+	{% endblock leftcolumn %}
+
+
+	{% block rightcolumn %}
+	{% endblock rightcolumn %}
+
+{% endblock content %}
+
+
{{ book.title }}
+
+
+    {% for c in chunks %}
+        
+        | {{ c.chunk.comment }}+ | {% for fix in c.fix %}
+
+                {% ifequal fix "wl" %}</>{% endifequal %}
+
+                {% ifequal fix "bad-master" %}master{% endifequal %}
+
+                {% ifequal fix "trim-begin" %}✁{% endifequal %}
+
+                {% ifequal fix "trim-end" %}✃{% endifequal %}
+
+            {% endfor %}
+
+            {% ifequal c.grade "plain" %}
+                {% trans "unstructured text" %}
+            {% endifequal %}
+
+            {% ifequal c.grade "xml" %}
+                {% trans "unknown XML" %}
+            {% endifequal %}
+
+            {% ifequal c.grade "wl-broken" %}
+                {% trans "broken document" %}
+            {% endifequal %}
+
++ | [{% trans "edit" %}]+ | {% if c.chunk.publishable %}P{% endif %}+ | {% if c.chunk.user.is_authenticated %}
+                {{ c.chunk.user }}
+            {% endif %}+ | [+]+ | 
+    {% endfor %}
+    {% if need_fixing %}
+        |  | +            
+ | 
+    {% endif %}
+
+
+{% trans "Append to other book" %}
+
+{% trans "Last published" %}: {{ book.last_published }}
+
+{% if book.publishable %}
+    
+    {% trans "Full XML" %}
+    {% trans "HTML version" %}
+    {% trans "TXT version" %}
+    {% comment %}
+    {% trans "EPUB version" %}
+    {% trans "PDF version" %}
+    {% endcomment %}
+    
+
+    
+    
+{% else %}
+    {% trans "This book cannot be published yet" %}
+{% endif %}
+
+{% endblock leftcolumn %}
+
+{% block rightcolumn %}
+{% render_comment_list for book %}
+{% with book.get_absolute_url as next %}
+    {% render_comment_form for book %}
+{% endwith %}
+
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/book_edit.html b/apps/catalogue/templates/catalogue/book_edit.html
new file mode 100755
index 00000000..3fffa963
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/book_edit.html
@@ -0,0 +1,14 @@
+{% extends "catalogue/base.html" %}
+{% load i18n %}
+
+{% block leftcolumn %}
+	
+{% endblock leftcolumn %}
+
+{% block rightcolumn %}
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/chunk_add.html b/apps/catalogue/templates/catalogue/chunk_add.html
new file mode 100755
index 00000000..800a7e45
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/chunk_add.html
@@ -0,0 +1,14 @@
+{% extends "catalogue/base.html" %}
+{% load i18n %}
+
+{% block leftcolumn %}
+	
+{% endblock leftcolumn %}
+
+{% block rightcolumn %}
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/chunk_edit.html b/apps/catalogue/templates/catalogue/chunk_edit.html
new file mode 100755
index 00000000..3fffa963
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/chunk_edit.html
@@ -0,0 +1,14 @@
+{% extends "catalogue/base.html" %}
+{% load i18n %}
+
+{% block leftcolumn %}
+	
+{% endblock leftcolumn %}
+
+{% block rightcolumn %}
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/document_create_missing.html b/apps/catalogue/templates/catalogue/document_create_missing.html
new file mode 100644
index 00000000..dcb61752
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/document_create_missing.html
@@ -0,0 +1,14 @@
+{% extends "catalogue/base.html" %}
+{% load i18n %}
+
+{% block leftcolumn %}
+	
+{% endblock leftcolumn %}
+
+{% block rightcolumn %}
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/document_list.html b/apps/catalogue/templates/catalogue/document_list.html
new file mode 100644
index 00000000..3473b596
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/document_list.html
@@ -0,0 +1,128 @@
+{% extends "catalogue/base.html" %}
+
+{% load i18n %}
+{% load pagination_tags %}
+{% load set_get_parameter catalogue %}
+
+{% block extrabody %}
+{{ block.super }}
+
+{% endblock %}
+
+{% block leftcolumn %}
+
+    
+{% endblock leftcolumn %}
+
+{% block rightcolumn %}
+	
+		
{% trans "Your last edited documents" %}
+	    
+			{% for slugs, item in last_books %}
+			- {{ item.title }}
 ({{ item.time|date:"H:i:s, d/m/Y" }})
+			{% endfor %}
+
+	
{% trans "Recent activity for" %} {{ viewed_user }}
+        {% wall viewed_user %}
+    {% else %}
+        {% trans "Recent activity" %}
+        {% wall %}
+    {% endif %}
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/document_upload.html b/apps/catalogue/templates/catalogue/document_upload.html
new file mode 100644
index 00000000..87e93e0a
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/document_upload.html
@@ -0,0 +1,69 @@
+{% extends "catalogue/base.html" %}
+{% load i18n %}
+
+
+{% block leftcolumn %}
+
+
+{% trans "Bulk documents upload" %}
+
+
+{% trans "Please submit a ZIP with UTF-8 encoded XML files. Files not ending with .xml will be ignored." %}
+
+
+
+
+
+
+{% if error_list %}
+
+    {% trans "There have been some errors. No files have been added to the repository." %}
+    
{% trans "Offending files" %}
+    
+        {% for filename, title, error in error_list %}
+            - {{ title }} ({{ filename }}): {{ error }}
+        {% endfor %}
+
+
+    {% if ok_list %}
+{% trans "Correct files" %}
+        
+            {% for filename, slug, title in ok_list %}
+                - {{ title }} ({{ filename }})
+            {% endfor %}
+
+    {% endif %}
+
+{% else %}
+
+    {% if ok_list %}
+{% trans "Files have been successfully uploaded to the repository." %}
+        {% trans "Uploaded files" %}
+        
+        {% for filename, slug, title in ok_list %}
+            - {{ title }} ({{ filename }})
+        {% endfor %}
+
+    {% endif %}
+{% endif %}
+
+{% if skipped_list %}
+{% trans "Skipped files" %}
+    {% trans "Files skipped due to no .xml extension" %}
+    
+        {% for filename in skipped_list %}
+            - {{ filename }}+        {% endfor %}
+
+{% endif %}
+
+
+{% endblock leftcolumn %}
+
+
+{% block rightcolumn %}
+{% endblock rightcolumn %}
diff --git a/apps/catalogue/templates/catalogue/main_tabs.html b/apps/catalogue/templates/catalogue/main_tabs.html
new file mode 100755
index 00000000..82321cc4
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/main_tabs.html
@@ -0,0 +1,3 @@
+{% for tab in tabs %}
+    {{ tab.caption }}
+{% endfor %}
diff --git a/apps/catalogue/templates/catalogue/user_list.html b/apps/catalogue/templates/catalogue/user_list.html
new file mode 100755
index 00000000..9e1e83e5
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/user_list.html
@@ -0,0 +1,18 @@
+{% extends "catalogue/base.html" %}
+
+{% load i18n %}
+
+{% block leftcolumn %}
+
+{% trans "Users" %}
+
+
+
+{% endblock leftcolumn %}
diff --git a/apps/catalogue/templates/catalogue/wall.html b/apps/catalogue/templates/catalogue/wall.html
new file mode 100755
index 00000000..0e4597e5
--- /dev/null
+++ b/apps/catalogue/templates/catalogue/wall.html
@@ -0,0 +1,32 @@
+{% load i18n %}
+{% load gravatar %}
+
+
diff --git a/apps/catalogue/templatetags/__init__.py b/apps/catalogue/templatetags/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/apps/catalogue/templatetags/catalogue.py b/apps/catalogue/templatetags/catalogue.py
new file mode 100644
index 00000000..850a2e80
--- /dev/null
+++ b/apps/catalogue/templatetags/catalogue.py
@@ -0,0 +1,151 @@
+from __future__ import absolute_import
+
+from django.db.models import Count, Q
+from django.core.urlresolvers import reverse
+from django.contrib.comments.models import Comment
+from django.template.defaultfilters import stringfilter
+from django import template
+from django.utils.translation import ugettext as _
+
+from catalogue.models import Book, Chunk, BookPublishRecord
+
+register = template.Library()
+
+
+class Tab(object):
+    slug = None
+    caption = None
+    url = None
+
+    def __init__(self, slug, caption, url):
+        self.slug = slug
+        self.caption = caption
+        self.url = url
+
+
+@register.inclusion_tag("catalogue/main_tabs.html", takes_context=True)
+def main_tabs(context):
+    active = getattr(context['request'], 'catalogue_active_tab', None)
+
+    tabs = []
+    user = context['user']
+    if user.is_authenticated():
+        tabs.append(Tab('my', _('My page'), reverse("catalogue_user")))
+
+    tabs.append(Tab('all', _('All'), reverse("catalogue_document_list")))
+    tabs.append(Tab('users', _('Users'), reverse("catalogue_users")))
+    tabs.append(Tab('create', _('Add'), reverse("catalogue_create_missing")))
+    tabs.append(Tab('upload', _('Upload'), reverse("catalogue_upload")))
+
+    if user.is_staff:
+        tabs.append(Tab('admin', _('Admin'), reverse("admin:index")))
+
+    return {"tabs": tabs, "active_tab": active}
+
+
+class WallItem(object):
+    title = ''
+    summary = ''
+    url = ''
+    timestamp = ''
+    user = None
+    email = ''
+
+    def __init__(self, tag):
+        self.tag = tag
+
+    def get_email(self):
+        if self.user:
+            return self.user.email
+        else:
+            return self.email
+
+
+def changes_wall(user, max_len):
+    qs = Chunk.change_model.objects.filter(revision__gt=-1).order_by('-created_at')
+    qs = qs.defer('patch')
+    qs = qs.select_related('author', 'tree', 'tree__book__title')
+    if user:
+        qs = qs.filter(Q(author=user) | Q(tree__user=user))
+    qs = qs[:max_len]
+    for item in qs:
+        tag = 'stage' if item.tags.count() else 'change'
+        chunk = item.tree
+        w  = WallItem(tag)
+        w.title = chunk.pretty_name()
+        w.summary = item.description
+        w.url = reverse('wiki_editor', 
+                args=[chunk.book.slug, chunk.slug]) + '?diff=%d' % item.revision
+        w.timestamp = item.created_at
+        w.user = item.author
+        w.email = item.author_email
+        yield w
+
+
+# TODO: marked for publishing
+
+
+def published_wall(user, max_len):
+    qs = BookPublishRecord.objects.select_related('book__title')
+    if user:
+        # TODO: published my book
+        qs = qs.filter(Q(user=user))
+    qs = qs[:max_len]
+    for item in qs:
+        w  = WallItem('publish')
+        w.title = item.book.title
+        #w.summary = 
+        w.url = chunk.book.get_absolute_url()
+        yield w
+
+
+def comments_wall(user, max_len):
+    qs = Comment.objects.filter(is_public=True).select_related().order_by('-submit_date')
+    if user:
+        # TODO: comments concerning my books
+        qs = qs.filter(Q(user=user))
+    qs = qs[:max_len]
+    for item in qs:
+        w  = WallItem('comment')
+        w.title = item.content_object
+        w.summary = item.comment
+        w.url = item.content_object.get_absolute_url()
+        w.timestamp = item.submit_date
+        w.user = item.user
+        w.email = item.user_email
+        yield w
+
+
+def big_wall(max_len, *args):
+    """
+        Takes some WallItem iterators and zips them into one big wall.
+        Input iterators must already be sorted by timestamp.
+    """
+    subwalls = []
+    for w in args:
+        try:
+            subwalls.append([next(w), w])
+        except StopIteration:
+            pass
+
+    while max_len and subwalls:
+        i, next_item = max(enumerate(subwalls), key=lambda x: x[1][0].timestamp)
+        yield next_item[0]
+        max_len -= 1
+        try:
+            next_item[0] = next(next_item[1])
+        except StopIteration:
+            del subwalls[i]
+
+
+@register.inclusion_tag("catalogue/wall.html", takes_context=True)
+def wall(context, user=None, max_len=10):
+    print user
+    return {
+        "request": context['request'],
+        "STATIC_URL": context['STATIC_URL'],
+        "wall": big_wall(max_len,
+            changes_wall(user, max_len),
+            published_wall(user, max_len),
+            comments_wall(user, max_len),
+        )}
diff --git a/apps/catalogue/templatetags/set_get_parameter.py b/apps/catalogue/templatetags/set_get_parameter.py
new file mode 100755
index 00000000..b3d44d73
--- /dev/null
+++ b/apps/catalogue/templatetags/set_get_parameter.py
@@ -0,0 +1,46 @@
+from re import split
+
+from django import template
+
+register = template.Library()
+
+
+"""
+In template:
+    {% set_get_paramater param1='const_value',param2=,param3=variable %}
+results with changes to query string:
+    param1 is set to `const_value' string
+    param2 is unset, if exists,
+    param3 is set to the value of variable in context
+
+Using 'django.core.context_processors.request' is required.
+
+"""
+
+
+class SetGetParameter(template.Node):
+    def __init__(self, values):
+        self.values = values
+        
+    def render(self, context):
+        request = template.Variable('request').resolve(context)
+        params = request.GET.copy()
+        for key, value in self.values.items():
+            if value == '':
+                if key in params:
+                    del(params[key])
+            else:
+                params[key] = template.Variable(value).resolve(context)
+        return '?%s' %  params.urlencode()
+
+
+@register.tag
+def set_get_parameter(parser, token):
+    parts = split(r'\s+', token.contents, 2)
+
+    values = {}
+    for pair in parts[1].split(','):
+        s = pair.split('=')
+        values[s[0]] = s[1]
+
+    return SetGetParameter(values)
diff --git a/apps/catalogue/tests.py b/apps/catalogue/tests.py
new file mode 100644
index 00000000..65777379
--- /dev/null
+++ b/apps/catalogue/tests.py
@@ -0,0 +1,19 @@
+from nose.tools import *
+import wiki.models as models
+import shutil
+import tempfile
+
+
+class TestStorageBase:
+    def setUp(self):
+        self.dirpath = tempfile.mkdtemp(prefix='nosetest_')
+
+    def tearDown(self):
+        shutil.rmtree(self.dirpath)
+
+
+class TestDocumentStorage(TestStorageBase):
+
+    def test_storage_empty(self):
+        storage = models.DocumentStorage(self.dirpath)
+        eq_(storage.all(), [])
diff --git a/apps/catalogue/urls.py b/apps/catalogue/urls.py
new file mode 100644
index 00000000..e9e5e893
--- /dev/null
+++ b/apps/catalogue/urls.py
@@ -0,0 +1,40 @@
+# -*- coding: utf-8
+from django.conf.urls.defaults import *
+from django.views.generic.simple import redirect_to
+
+
+urlpatterns = patterns('catalogue.views',
+    url(r'^$', redirect_to, {'url': 'catalogue/'}),
+
+    url(r'^catalogue/$', 'document_list', name='catalogue_document_list'),
+    url(r'^user/$', 'my', name='catalogue_user'),
+    url(r'^user/(?P[^/]+)/$', 'user', name='catalogue_user'),
+    url(r'^users/$', 'users', name='catalogue_users'),
+
+    url(r'^upload/$',
+        'upload', name='catalogue_upload'),
+
+    url(r'^create/(?P[^/]*)/',
+        'create_missing', name='catalogue_create_missing'),
+    url(r'^create/',
+        'create_missing', name='catalogue_create_missing'),
+
+    url(r'^book/(?P[^/]+)/publish$', 'publish', name="catalogue_publish"),
+    #url(r'^(?P[^/]+)/publish/(?P\d+)$', 'publish', name="catalogue_publish"),
+
+    url(r'^book/(?P[^/]+)/$', 'book', name="catalogue_book"),
+    url(r'^book/(?P[^/]+)/xml$', 'book_xml', name="catalogue_book_xml"),
+    url(r'^book/(?P[^/]+)/txt$', 'book_txt', name="catalogue_book_txt"),
+    url(r'^book/(?P[^/]+)/html$', 'book_html', name="catalogue_book_html"),
+    #url(r'^book/(?P[^/]+)/epub$', 'book_epub', name="catalogue_book_epub"),
+    #url(r'^book/(?P[^/]+)/pdf$', 'book_pdf', name="catalogue_book_pdf"),
+    url(r'^chunk_add/(?P[^/]+)/(?P[^/]+)/$',
+        'chunk_add', name="catalogue_chunk_add"),
+    url(r'^chunk_edit/(?P[^/]+)/(?P[^/]+)/$',
+        'chunk_edit', name="catalogue_chunk_edit"),
+    url(r'^book_append/(?P[^/]+)/$',
+        'book_append', name="catalogue_book_append"),
+    url(r'^book_edit/(?P[^/]+)/$',
+        'book_edit', name="catalogue_book_edit"),
+
+)
diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py
new file mode 100644
index 00000000..3c58f3f0
--- /dev/null
+++ b/apps/catalogue/views.py
@@ -0,0 +1,422 @@
+from datetime import datetime
+import logging
+import os
+from StringIO import StringIO
+
+from django.contrib import auth
+from django.contrib.auth.models import User
+from django.contrib.auth.decorators import login_required
+from django.core.urlresolvers import reverse
+from django.db.models import Count
+from django import http
+from django.http import Http404
+from django.shortcuts import get_object_or_404
+from django.utils.http import urlquote_plus
+from django.utils.translation import ugettext_lazy as _
+from django.views.decorators.http import require_POST
+from django.views.generic.simple import direct_to_template
+
+import librarian.html
+import librarian.text
+
+from catalogue import forms
+from catalogue import helpers
+from catalogue.helpers import active_tab
+from catalogue.models import Book, Chunk, BookPublishRecord, ChunkPublishRecord
+from catalogue import xml_tools
+
+#
+# Quick hack around caching problems, TODO: use ETags
+#
+from django.views.decorators.cache import never_cache
+
+logger = logging.getLogger("fnp.catalogue")
+
+
+def slug_filter(qs, value, filter_field, model, model_field='slug', unset=''):
+    if value == unset:
+        return qs.filter(**{filter_field: None})
+    if value is None:
+        return qs
+    try:
+        obj = model._default_manager.get(**{model_field: value})
+    except model.DoesNotExist:
+        return qs.none()
+    else:
+        return qs.filter(**{filter_field: obj})
+
+
+@active_tab('all')
+@never_cache
+def document_list(request, filters=None):
+    chunks = Chunk.objects.order_by('book__title', 'book', 'number')
+
+    chunks = slug_filter(chunks, request.GET.get('user', None), 'user', User, 'username')
+    chunks = slug_filter(chunks, request.GET.get('stage', None), 'stage', Chunk.tag_model, 'slug')
+
+    chunks_list = helpers.ChunksList(chunks)
+
+    return direct_to_template(request, 'catalogue/document_list.html', extra_context={
+        'books': chunks_list,
+        'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
+                        key=lambda x: x[1]['time'], reverse=True),
+        'stages': Chunk.tag_model.objects.all(),
+        'users': User.objects.annotate(count=Count('chunk')).order_by('-count', 'last_name', 'first_name'),
+    })
+
+
+@never_cache
+def user(request, username=None):
+    if username is None:
+        if request.user.is_authenticated():
+            user = request.user
+        else:
+            raise Http404
+    else:
+        user = get_object_or_404(User, username=username)
+
+    chunks_list = helpers.ChunksList(Chunk.objects.filter(
+        user=user).order_by('book__title', 'book', 'number'))
+
+    return direct_to_template(request, 'catalogue/document_list.html', extra_context={
+        'books': chunks_list,
+        'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
+                        key=lambda x: x[1]['time'], reverse=True),
+        'viewed_user': user,
+        'stages': Chunk.tag_model.objects.all(),
+    })
+my = login_required(active_tab('my')(user))
+
+
+@active_tab('users')
+def users(request):
+    return direct_to_template(request, 'catalogue/user_list.html', extra_context={
+        'users': User.objects.all().annotate(count=Count('chunk')).order_by(
+            '-count', 'last_name', 'first_name'),
+    })
+
+
+@never_cache
+def logout_then_redirect(request):
+    auth.logout(request)
+    return http.HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
+
+
+@active_tab('create')
+def create_missing(request, slug=None):
+    if slug is None:
+        slug = ''
+    slug = slug.replace(' ', '-')
+
+    if request.method == "POST":
+        form = forms.DocumentCreateForm(request.POST, request.FILES)
+        if form.is_valid():
+            
+            if request.user.is_authenticated():
+                creator = request.user
+            else:
+                creator = None
+            book = Book.create(creator=creator,
+                slug=form.cleaned_data['slug'],
+                title=form.cleaned_data['title'],
+                text=form.cleaned_data['text'],
+            )
+
+            return http.HttpResponseRedirect(reverse("wiki_editor", args=[book.slug]))
+    else:
+        form = forms.DocumentCreateForm(initial={
+                "slug": slug,
+                "title": slug.replace('-', ' ').title(),
+        })
+
+    return direct_to_template(request, "catalogue/document_create_missing.html", extra_context={
+        "slug": slug,
+        "form": form,
+    })
+
+
+@active_tab('upload')
+def upload(request):
+    if request.method == "POST":
+        form = forms.DocumentsUploadForm(request.POST, request.FILES)
+        if form.is_valid():
+            import slughifi
+
+            if request.user.is_authenticated():
+                creator = request.user
+            else:
+                creator = None
+
+            zip = form.cleaned_data['zip']
+            skipped_list = []
+            ok_list = []
+            error_list = []
+            slugs = {}
+            existing = [book.slug for book in Book.objects.all()]
+            for filename in zip.namelist():
+                if filename[-1] == '/':
+                    continue
+                title = os.path.basename(filename)[:-4]
+                slug = slughifi(title)
+                if not (slug and filename.endswith('.xml')):
+                    skipped_list.append(filename)
+                elif slug in slugs:
+                    error_list.append((filename, slug, _('Slug already used for %s' % slugs[slug])))
+                elif slug in existing:
+                    error_list.append((filename, slug, _('Slug already used in repository.')))
+                else:
+                    try:
+                        zip.read(filename).decode('utf-8') # test read
+                        ok_list.append((filename, slug, title))
+                    except UnicodeDecodeError:
+                        error_list.append((filename, title, _('File should be UTF-8 encoded.')))
+                    slugs[slug] = filename
+
+            if not error_list:
+                for filename, slug, title in ok_list:
+                    Book.create(creator=creator,
+                        slug=slug,
+                        title=title,
+                        text=zip.read(filename).decode('utf-8'),
+                    )
+
+            return direct_to_template(request, "catalogue/document_upload.html", extra_context={
+                "form": form,
+                "ok_list": ok_list,
+                "skipped_list": skipped_list,
+                "error_list": error_list,
+            })
+    else:
+        form = forms.DocumentsUploadForm()
+
+    return direct_to_template(request, "catalogue/document_upload.html", extra_context={
+        "form": form,
+    })
+
+
+@never_cache
+def book_xml(request, slug):
+    xml = get_object_or_404(Book, slug=slug).materialize()
+
+    response = http.HttpResponse(xml, content_type='application/xml', mimetype='application/wl+xml')
+    response['Content-Disposition'] = 'attachment; filename=%s.xml' % slug
+    return response
+
+
+@never_cache
+def book_txt(request, slug):
+    xml = get_object_or_404(Book, slug=slug).materialize()
+    output = StringIO()
+    # errors?
+    librarian.text.transform(StringIO(xml), output)
+    text = output.getvalue()
+    response = http.HttpResponse(text, content_type='text/plain', mimetype='text/plain')
+    response['Content-Disposition'] = 'attachment; filename=%s.txt' % slug
+    return response
+
+
+@never_cache
+def book_html(request, slug):
+    xml = get_object_or_404(Book, slug=slug).materialize()
+    output = StringIO()
+    # errors?
+    librarian.html.transform(StringIO(xml), output, parse_dublincore=False,
+                             flags=['full-page'])
+    html = output.getvalue()
+    response = http.HttpResponse(html, content_type='text/html', mimetype='text/html')
+    return response
+
+
+@never_cache
+def revision(request, slug, chunk=None):
+    try:
+        doc = Chunk.get(slug, chunk)
+    except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
+        raise Http404
+    return http.HttpResponse(str(doc.revision()))
+
+
+def book(request, slug):
+    book = get_object_or_404(Book, slug=slug)
+
+    # TODO: most of this should go somewhere else
+
+    # do we need some automation?
+    first_master = None
+    chunks = []
+    need_fixing = False
+    choose_master = False
+
+    length = book.chunk_set.count()
+    for i, chunk in enumerate(book):
+        chunk_dict = {
+            "chunk": chunk,
+            "fix": [],
+            "grade": ""
+            }
+        graded = xml_tools.GradedText(chunk.materialize())
+        if graded.is_wl():
+            master = graded.master()
+            if first_master is None:
+                first_master = master
+            elif master != first_master:
+                chunk_dict['fix'].append('bad-master')
+
+            if i > 0 and not graded.has_trim_begin():
+                chunk_dict['fix'].append('trim-begin')
+            if i < length - 1 and not graded.has_trim_end():
+                chunk_dict['fix'].append('trim-end')
+
+            if chunk_dict['fix']:
+                chunk_dict['grade'] = 'wl-fix'
+            else:
+                chunk_dict['grade'] = 'wl'
+
+        elif graded.is_broken_wl():
+            chunk_dict['grade'] = 'wl-broken'
+        elif graded.is_xml():
+            chunk_dict['grade'] = 'xml'
+        else:
+            chunk_dict['grade'] = 'plain'
+            chunk_dict['fix'].append('wl')
+            choose_master = True
+
+        if chunk_dict['fix']:
+            need_fixing = True
+        chunks.append(chunk_dict)
+
+    if first_master or not need_fixing:
+        choose_master = False
+
+    if request.method == "POST":
+        form = forms.ChooseMasterForm(request.POST)
+        if not choose_master or form.is_valid():
+            if choose_master:
+                first_master = form.cleaned_data['master']
+
+            # do the actual fixing
+            for c in chunks:
+                if not c['fix']:
+                    continue
+
+                text = c['chunk'].materialize()
+                for fix in c['fix']:
+                    if fix == 'bad-master':
+                        text = xml_tools.change_master(text, first_master)
+                    elif fix == 'trim-begin':
+                        text = xml_tools.add_trim_begin(text)
+                    elif fix == 'trim-end':
+                        text = xml_tools.add_trim_end(text)
+                    elif fix == 'wl':
+                        text = xml_tools.basic_structure(text, first_master)
+                author = request.user if request.user.is_authenticated() else None
+                description = "auto-fix: " + ", ".join(c['fix'])
+                c['chunk'].commit(text=text, author=author, 
+                    description=description)
+
+            return http.HttpResponseRedirect(book.get_absolute_url())
+    elif choose_master:
+        form = forms.ChooseMasterForm()
+    else:
+        form = None
+
+    return direct_to_template(request, "catalogue/book_detail.html", extra_context={
+        "book": book,
+        "chunks": chunks,
+        "need_fixing": need_fixing,
+        "choose_master": choose_master,
+        "first_master": first_master,
+        "form": form,
+    })
+
+
+def chunk_add(request, slug, chunk):
+    try:
+        doc = Chunk.get(slug, chunk)
+    except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
+        raise Http404
+
+    if request.method == "POST":
+        form = forms.ChunkAddForm(request.POST, instance=doc)
+        if form.is_valid():
+            if request.user.is_authenticated():
+                creator = request.user
+            else:
+                creator = None
+            doc.split(creator=creator,
+                slug=form.cleaned_data['slug'],
+                comment=form.cleaned_data['comment'],
+            )
+
+            return http.HttpResponseRedirect(doc.book.get_absolute_url())
+    else:
+        form = forms.ChunkAddForm(initial={
+                "slug": str(doc.number + 1),
+                "comment": "cz. %d" % (doc.number + 1, ),
+        })
+
+    return direct_to_template(request, "catalogue/chunk_add.html", extra_context={
+        "chunk": doc,
+        "form": form,
+    })
+
+
+def chunk_edit(request, slug, chunk):
+    try:
+        doc = Chunk.get(slug, chunk)
+    except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
+        raise Http404
+    if request.method == "POST":
+        form = forms.ChunkForm(request.POST, instance=doc)
+        if form.is_valid():
+            form.save()
+            return http.HttpResponseRedirect(doc.book.get_absolute_url())
+    else:
+        form = forms.ChunkForm(instance=doc)
+    return direct_to_template(request, "catalogue/chunk_edit.html", extra_context={
+        "chunk": doc,
+        "form": form,
+    })
+
+
+def book_append(request, slug):
+    book = get_object_or_404(Book, slug=slug)
+    if request.method == "POST":
+        form = forms.BookAppendForm(request.POST)
+        if form.is_valid():
+            append_to = form.cleaned_data['append_to']
+            append_to.append(book)
+            return http.HttpResponseRedirect(append_to.get_absolute_url())
+    else:
+        form = forms.BookAppendForm()
+    return direct_to_template(request, "catalogue/book_append_to.html", extra_context={
+        "book": book,
+        "form": form,
+    })
+
+
+def book_edit(request, slug):
+    book = get_object_or_404(Book, slug=slug)
+    if request.method == "POST":
+        form = forms.BookForm(request.POST, instance=book)
+        if form.is_valid():
+            form.save()
+            return http.HttpResponseRedirect(book.get_absolute_url())
+    else:
+        form = forms.BookForm(instance=book)
+    return direct_to_template(request, "catalogue/book_edit.html", extra_context={
+        "book": book,
+        "form": form,
+    })
+
+
+@require_POST
+@login_required
+def publish(request, slug):
+    book = get_object_or_404(Book, slug=slug)
+    try:
+        book.publish(request.user)
+    except BaseException, e:
+        return http.HttpResponse(e)
+    else:
+        return http.HttpResponseRedirect(book.get_absolute_url())
diff --git a/apps/catalogue/xml_tools.py b/apps/catalogue/xml_tools.py
new file mode 100755
index 00000000..928e57be
--- /dev/null
+++ b/apps/catalogue/xml_tools.py
@@ -0,0 +1,204 @@
+from functools import wraps
+import re
+
+from lxml import etree
+from catalogue.constants import TRIM_BEGIN, TRIM_END, MASTERS
+
+RE_TRIM_BEGIN = re.compile("^$" % TRIM_BEGIN, re.M)
+RE_TRIM_END = re.compile("^$" % TRIM_END, re.M)
+
+
+class ParseError(BaseException):
+    pass
+
+
+def obj_memoized(f):
+    """
+        A decorator that caches return value of object methods.
+        The cache is kept with the object, in a _obj_memoized property.
+    """
+    @wraps(f)
+    def wrapper(self, *args, **kwargs):
+        if not hasattr(self, '_obj_memoized'):
+            self._obj_memoized = {}
+        key = (f.__name__,) + args + tuple(sorted(kwargs.iteritems()))
+        try:
+            return self._obj_memoized[key]
+        except TypeError:
+            return f(self, *args, **kwargs)
+        except KeyError:
+            self._obj_memoized[key] = f(self, *args, **kwargs)
+            return self._obj_memoized[key]
+    return wrapper
+
+
+class GradedText(object):
+    _edoc = None
+
+    ROOT = 'utwor'
+    RDF = '{http://www.w3.org/1999/02/22-rdf-syntax-ns#}RDF'
+
+    def __init__(self, text):
+        self._text = text
+
+    @obj_memoized
+    def is_xml(self):
+        """
+            Determines if it's a well-formed XML.
+
+            >>> GradedText("").is_xml()
+            True
+            >>> GradedText("").is_xml()
+            False
+        """
+        try:
+            self._edoc = etree.fromstring(self._text)
+        except etree.XMLSyntaxError:
+            return False
+        return True
+
+    @obj_memoized
+    def is_wl(self):
+        """
+            Determines if it's an XML with a  and a master tag.
+
+            >>> GradedText("").is_wl()
+            True
+            >>> GradedText("").is_wl()
+            False
+        """
+        if self.is_xml():
+            e = self._edoc
+            # FIXME: there could be comments
+            ret = e.tag == self.ROOT and (
+                len(e) == 1 and e[0].tag in MASTERS or
+                len(e) == 2 and e[0].tag == self.RDF 
+                    and e[1].tag in MASTERS)
+            if ret:
+                self._master = e[-1].tag
+            del self._edoc
+            return ret
+        else:
+            return False
+
+    @obj_memoized
+    def is_broken_wl(self):
+        """
+            Determines if it at least looks like broken WL file
+            and not just some untagged text.
+
+            >>> GradedText("<").is_broken_wl()
+            True
+            >>> GradedText("some text").is_broken_wl()
+            False
+        """
+        if self.is_wl():
+            return True
+        text = self._text.strip()
+        return text.startswith('') and text.endswith('')
+
+    def master(self):
+        """
+            Gets the master tag.
+
+            >>> GradedText("").master()
+            'powiesc'
+        """
+        assert self.is_wl()
+        return self._master
+
+    @obj_memoized
+    def has_trim_begin(self):
+        return RE_TRIM_BEGIN.search(self._text)
+
+    @obj_memoized
+    def has_trim_end(self):
+        return RE_TRIM_END.search(self._text)
+
+
+def _trim(text, trim_begin=True, trim_end=True):
+    """ 
+        Cut off everything before RE_TRIM_BEGIN and after RE_TRIM_END, so
+        that eg. one big XML file can be compiled from many small XML files.
+    """
+    if trim_begin:
+        text = RE_TRIM_BEGIN.split(text, maxsplit=1)[-1]
+    if trim_end:
+        text = RE_TRIM_END.split(text, maxsplit=1)[0]
+    return text
+
+
+def compile_text(parts):
+    """ 
+        Compiles full text from an iterable of parts,
+        trimming where applicable.
+    """
+    texts = []
+    trim_begin = False
+    text = ''
+    for next_text in parts:
+        if not next_text:
+            continue
+        # trim the end, because there's more non-empty text
+        # don't trim beginning, if `text' is the first non-empty part
+        texts.append(_trim(text, trim_begin=trim_begin))
+        trim_begin = True
+        text = next_text
+    # don't trim the end, because there's no more text coming after `text'
+    # only trim beginning if it's not still the first non-empty
+    texts.append(_trim(text, trim_begin=trim_begin, trim_end=False))
+    return "".join(texts)
+
+
+def change_master(text, master):
+    """
+        Changes the master tag in a WL document.
+    """
+    e = etree.fromstring(text)
+    e[-1].tag = master
+    return etree.tostring(e, encoding="utf-8")
+
+
+def basic_structure(text, master):
+    e = etree.fromstring('''
+
+
+
+''' % (TRIM_BEGIN, TRIM_END))
+    e[0].tag = master
+    e[0][0].tail = "\n"*3 + text + "\n"*3
+    return etree.tostring(e, encoding="utf-8")
+
+
+def add_trim_begin(text):
+    trim_tag = etree.Comment(TRIM_BEGIN)
+    e = etree.fromstring(text)
+    for master in e[::-1]:
+        if master.tag in MASTERS:
+            break
+    if master.tag not in MASTERS:
+        raise ParseError('No master tag found!')
+
+    master.insert(0, trim_tag)
+    trim_tag.tail = '\n\n\n' + (master.text or '')
+    master.text = '\n'
+    return etree.tostring(e, encoding="utf-8")
+
+
+def add_trim_end(text):
+    trim_tag = etree.Comment(TRIM_END)
+    e = etree.fromstring(text)
+    for master in e[::-1]:
+        if master.tag in MASTERS:
+            break
+    if master.tag not in MASTERS:
+        raise ParseError('No master tag found!')
+
+    master.append(trim_tag)
+    trim_tag.tail = '\n'
+    prev = trim_tag.getprevious()
+    if prev is not None:
+        prev.tail = (prev.tail or '') + '\n\n\n'
+    else:
+        master.text = (master.text or '') + '\n\n\n'
+    return etree.tostring(e, encoding="utf-8")
diff --git a/apps/dvcs/__init__.py b/apps/dvcs/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/apps/dvcs/models.py b/apps/dvcs/models.py
new file mode 100644
index 00000000..177b0d30
--- /dev/null
+++ b/apps/dvcs/models.py
@@ -0,0 +1,339 @@
+from datetime import datetime
+
+from django.db import models
+from django.db.models.base import ModelBase
+from django.contrib.auth.models import User
+from django.utils.translation import ugettext_lazy as _
+from mercurial import mdiff, simplemerge
+import pickle
+
+
+class Tag(models.Model):
+    """
+        a tag (e.g. document stage) which can be applied to a change
+    """
+
+    name = models.CharField(_('name'), max_length=64)
+    slug = models.SlugField(_('slug'), unique=True, max_length=64, 
+            null=True, blank=True)
+    ordering = models.IntegerField(_('ordering'))
+
+    _object_cache = {}
+
+    class Meta:
+        abstract = True
+        ordering = ['ordering']
+
+    def __unicode__(self):
+        return self.name
+
+    @classmethod
+    def get(cls, slug):
+        if slug in cls._object_cache:
+            return cls._object_cache[slug]
+        else:
+            obj = cls.objects.get(slug=slug)
+            cls._object_cache[slug] = obj
+            return obj
+
+    @staticmethod
+    def listener_changed(sender, instance, **kwargs):
+        sender._object_cache = {}
+
+    def next(self):
+        """
+            Returns the next tag - stage to work on.
+            Returns None for the last stage.
+        """
+        try:
+            return Tag.objects.filter(ordering__gt=self.ordering)[0]
+        except IndexError:
+            return None
+
+models.signals.pre_save.connect(Tag.listener_changed, sender=Tag)
+
+
+class Change(models.Model):
+    """
+        Single document change related to previous change. The "parent"
+        argument points to the version against which this change has been 
+        recorded. Initial text will have a null parent.
+        
+        Data contains a pickled diff needed to reproduce the initial document.
+    """
+    author = models.ForeignKey(User, null=True, blank=True)
+    author_name = models.CharField(max_length=128, null=True, blank=True)
+    author_email = models.CharField(max_length=128, null=True, blank=True)
+    patch = models.TextField(blank=True)
+    revision = models.IntegerField(db_index=True)
+
+    parent = models.ForeignKey('self',
+                        null=True, blank=True, default=None,
+                        related_name="children")
+
+    merge_parent = models.ForeignKey('self',
+                        null=True, blank=True, default=None,
+                        related_name="merge_children")
+
+    description = models.TextField(blank=True, default='')
+    created_at = models.DateTimeField(editable=False, db_index=True, 
+                        default=datetime.now)
+    publishable = models.BooleanField(default=False)
+
+    class Meta:
+        abstract = True
+        ordering = ('created_at',)
+        unique_together = ['tree', 'revision']
+
+    def __unicode__(self):
+        return u"Id: %r, Tree %r, Parent %r, Patch '''\n%s'''" % (self.id, self.tree_id, self.parent_id, self.patch)
+
+    def author_str(self):
+        if self.author:
+            return "%s %s <%s>" % (
+                self.author.first_name,
+                self.author.last_name, 
+                self.author.email)
+        else:
+            return "%s <%s>" % (
+                self.author_name,
+                self.author_email
+                )
+
+
+    def save(self, *args, **kwargs):
+        """
+            take the next available revision number if none yet
+        """
+        if self.revision is None:
+            self.revision = self.tree.revision() + 1
+        return super(Change, self).save(*args, **kwargs)
+
+    @staticmethod
+    def make_patch(src, dst):
+        if isinstance(src, unicode):
+            src = src.encode('utf-8')
+        if isinstance(dst, unicode):
+            dst = dst.encode('utf-8')
+        return pickle.dumps(mdiff.textdiff(src, dst))
+
+    def materialize(self):
+        # special care for merged nodes
+        if self.parent is None and self.merge_parent is not None:
+            return self.apply_to(self.merge_parent.materialize())
+
+        changes = self.tree.change_set.exclude(parent=None).filter(
+                        revision__lte=self.revision).order_by('revision')
+        text = ''
+        for change in changes:
+            text = change.apply_to(text)
+        return text.decode('utf-8')
+
+    def make_child(self, patch, description, author=None,
+            author_name=None, author_email=None, tags=None):
+        ch = self.children.create(patch=patch,
+                        tree=self.tree, author=author,
+                        author_name=author_name,
+                        author_email=author_email,
+                        description=description)
+        if tags is not None:
+            ch.tags = tags
+        return ch
+
+    def make_merge_child(self, patch, description, author=None, 
+            author_name=None, author_email=None, tags=None):
+        ch = self.merge_children.create(patch=patch,
+                        tree=self.tree, author=author,
+                        author_name=author_name,
+                        author_email=author_email,
+                        description=description,
+                        tags=tags)
+        if tags is not None:
+            ch.tags = tags
+        return ch
+
+    def apply_to(self, text):
+        return mdiff.patch(text, pickle.loads(self.patch.encode('ascii')))
+
+    def merge_with(self, other, author=None, 
+            author_name=None, author_email=None, 
+            description=u"Automatic merge."):
+        assert self.tree_id == other.tree_id  # same tree
+        if other.parent_id == self.pk:
+            # immediate child 
+            return other
+
+        local = self.materialize()
+        base = other.merge_parent.materialize()
+        remote = other.apply_to(base)
+
+        merge = simplemerge.Merge3Text(base, local, remote)
+        result = ''.join(merge.merge_lines())
+        patch = self.make_patch(local, result)
+        return self.children.create(
+                    patch=patch, merge_parent=other, tree=self.tree,
+                    author=author,
+                    author_name=author_name,
+                    author_email=author_email,
+                    description=description)
+
+    def revert(self, **kwargs):
+        """ commit this version of a doc as new head """
+        self.tree.commit(text=self.materialize(), **kwargs)
+
+
+def create_tag_model(model):
+    name = model.__name__ + 'Tag'
+    attrs = {
+        '__module__': model.__module__,
+    }
+    return type(name, (Tag,), attrs)
+
+
+def create_change_model(model):
+    name = model.__name__ + 'Change'
+
+    attrs = {
+        '__module__': model.__module__,
+        'tree': models.ForeignKey(model, related_name='change_set'),
+        'tags': models.ManyToManyField(model.tag_model, related_name='change_set'),
+    }
+    return type(name, (Change,), attrs)
+
+
+
+class DocumentMeta(ModelBase):
+    "Metaclass for Document models."
+    def __new__(cls, name, bases, attrs):
+        model = super(DocumentMeta, cls).__new__(cls, name, bases, attrs)
+        if not model._meta.abstract:
+            # create a real Tag object and `stage' fk
+            model.tag_model = create_tag_model(model)
+            models.ForeignKey(model.tag_model, 
+                null=True, blank=True).contribute_to_class(model, 'stage')
+
+            # create real Change model and `head' fk
+            model.change_model = create_change_model(model)
+            models.ForeignKey(model.change_model,
+                    null=True, blank=True, default=None,
+                    help_text=_("This document's current head."),
+                    editable=False).contribute_to_class(model, 'head')
+
+        return model
+
+
+
+class Document(models.Model):
+    """
+        File in repository.        
+    """
+    __metaclass__ = DocumentMeta
+
+    creator = models.ForeignKey(User, null=True, blank=True, editable=False,
+                related_name="created_documents")
+
+    user = models.ForeignKey(User, null=True, blank=True)
+
+    class Meta:
+        abstract = True
+
+    def __unicode__(self):
+        return u"{0}, HEAD: {1}".format(self.id, self.head_id)
+
+    @models.permalink
+    def get_absolute_url(self):
+        return ('dvcs.views.document_data', (), {
+                        'document_id': self.id,
+                        'version': self.head_id,
+        })
+
+    def materialize(self, change=None):
+        if self.head is None:
+            return u''
+        if change is None:
+            change = self.head
+        elif not isinstance(change, Change):
+            change = self.change_set.get(pk=change)
+        return change.materialize()
+
+    def commit(self, **kwargs):
+        if 'parent' not in kwargs:
+            parent = self.head
+        else:
+            parent = kwargs['parent']
+            if not isinstance(parent, Change):
+                parent = self.change_set.objects.get(pk=kwargs['parent'])
+
+        if 'patch' not in kwargs:
+            if 'text' not in kwargs:
+                raise ValueError("You must provide either patch or target document.")
+            patch = Change.make_patch(self.materialize(change=parent), kwargs['text'])
+        else:
+            if 'text' in kwargs:
+                raise ValueError("You can provide only text or patch - not both")
+            patch = kwargs['patch']
+
+        author = kwargs.get('author', None)
+        author_name = kwargs.get('author_name', None)
+        author_email = kwargs.get('author_email', None)
+        tags = kwargs.get('tags', [])
+        if tags:
+            # set stage to next tag after the commited one
+            self.stage = max(tags, key=lambda t: t.ordering).next()
+
+        old_head = self.head
+        if parent != old_head:
+            change = parent.make_merge_child(patch, author=author, 
+                    author_name=author_name,
+                    author_email=author_email,
+                    description=kwargs.get('description', ''),
+                    tags=tags)
+            # not Fast-Forward - perform a merge
+            self.head = old_head.merge_with(change, author=author,
+                    author_name=author_name,
+                    author_email=author_email)
+        else:
+            self.head = parent.make_child(patch, author=author, 
+                    author_name=author_name,
+                    author_email=author_email,
+                    description=kwargs.get('description', ''),
+                    tags=tags)
+
+        self.save()
+        return self.head
+
+    def history(self):
+        return self.change_set.filter(revision__gt=-1)
+
+    def revision(self):
+        rev = self.change_set.aggregate(
+                models.Max('revision'))['revision__max']
+        return rev if rev is not None else -1
+
+    def at_revision(self, rev):
+        if rev is not None:
+            return self.change_set.get(revision=rev)
+        else:
+            return self.head
+
+    def publishable(self):
+        changes = self.change_set.filter(publishable=True).order_by('-created_at')[:1]
+        if changes.count():
+            return changes[0]
+        else:
+            return None
+
+    @staticmethod
+    def listener_initial_commit(sender, instance, created, **kwargs):
+        # run for Document and its subclasses
+        if not isinstance(instance, Document):
+            return
+        if created:
+            instance.head = instance.change_model.objects.create(
+                    revision=-1,
+                    author=instance.creator,
+                    patch=Change.make_patch('', ''),
+                    tree=instance)
+            instance.save()
+
+models.signals.post_save.connect(Document.listener_initial_commit)
diff --git a/apps/dvcs/tests.py b/apps/dvcs/tests.py
new file mode 100644
index 00000000..0c712957
--- /dev/null
+++ b/apps/dvcs/tests.py
@@ -0,0 +1,164 @@
+from django.test import TestCase
+from dvcs.models import Change, Document
+from django.contrib.auth.models import User
+
+class DocumentModelTests(TestCase):
+
+    def setUp(self):
+        self.user = User.objects.create_user("tester", "tester@localhost.local")
+
+    def assertTextEqual(self, given, expected):
+        return self.assertEqual(given, expected,
+            "Expected '''%s'''\n differs from text: '''%s'''" % (expected, given)
+        )
+
+    def test_empty_file(self):
+        doc = Document.objects.create(name=u"Sample Document", creator=self.user)
+        self.assert_(doc.head is not None)
+        self.assertEqual(doc.materialize(), u"")
+
+    def test_single_commit(self):
+        doc = Document.objects.create(name=u"Sample Document", creator=self.user)
+        doc.commit(text=u"Ala ma kota", description="Commit #1", author=self.user)
+        self.assert_(doc.head is not None)
+        self.assertEqual(doc.change_set.count(), 2)
+        self.assertEqual(doc.materialize(), u"Ala ma kota")
+
+    def test_chained_commits(self):
+        doc = Document.objects.create(name=u"Sample Document", creator=self.user)
+        c1 = doc.commit(description="Commit #1", text=u"""
+            Line #1
+            Line #2 is cool
+        """, author=self.user)
+        c2 = doc.commit(description="Commit #2", text=u"""
+            Line #1
+            Line #2 is hot
+        """, author=self.user)
+        c3 = doc.commit(description="Commit #3", text=u"""
+            Line #1
+            ... is hot
+            Line #3 ate Line #2
+        """, author=self.user)
+        self.assert_(doc.head is not None)
+        self.assertEqual(doc.change_set.count(), 4)
+
+        self.assertEqual(doc.materialize(), u"""
+            Line #1
+            ... is hot
+            Line #3 ate Line #2
+        """)
+        self.assertEqual(doc.materialize(version=c3), u"""
+            Line #1
+            ... is hot
+            Line #3 ate Line #2
+        """)
+        self.assertEqual(doc.materialize(version=c2), u"""
+            Line #1
+            Line #2 is hot
+        """)
+        self.assertEqual(doc.materialize(version=c1), """
+            Line #1
+            Line #2 is cool
+        """)
+
+
+    def test_parallel_commit_noconflict(self):
+        doc = Document.objects.create(name=u"Sample Document", creator=self.user)
+        self.assert_(doc.head is not None)
+        base = doc.head
+        base = doc.commit(description="Commit #1", text=u"""
+            Line #1
+            Line #2
+""", author=self.user)
+
+        c1 = doc.commit(description="Commit #2", text=u"""
+            Line #1 is hot
+            Line #2
+""", parent=base, author=self.user)
+        self.assertTextEqual(c1.materialize(), u"""
+            Line #1 is hot
+            Line #2
+""")
+        c2 = doc.commit(description="Commit #3", text=u"""
+            Line #1
+            Line #2
+            Line #3
+""", parent=base, author=self.user)
+        self.assertEqual(doc.change_set.count(), 5)
+        self.assertTextEqual(doc.materialize(), u"""
+            Line #1 is hot
+            Line #2
+            Line #3
+""")
+
+    def test_parallel_commit_conflict(self):
+        doc = Document.objects.create(name=u"Sample Document", creator=self.user)
+        self.assert_(doc.head is not None)
+        base = doc.head
+        base = doc.commit(description="Commit #1", text=u"""
+Line #1
+Line #2
+Line #3
+""", author=self.user)
+
+        c1 = doc.commit(description="Commit #2", text=u"""
+Line #1
+Line #2 is hot
+Line #3
+""", parent=base, author=self.user)
+        c2 = doc.commit(description="Commit #3", text=u"""
+Line #1
+Line #2 is cool
+Line #3
+""", parent=base, author=self.user)
+        self.assertEqual(doc.change_set.count(), 5)
+        self.assertTextEqual(doc.materialize(), u"""
+Line #1
+<<<<<<<
+Line #2 is hot
+=======
+Line #2 is cool
+>>>>>>>
+Line #3
+""")
+
+    def test_multiply_parallel_commits(self):
+        doc = Document.objects.create(name=u"Sample Document", creator=self.user)
+        self.assert_(doc.head is not None)
+        c1 = doc.commit(description="Commit A1", text=u"""
+Line #1
+
+Line #2
+
+Line #3
+""", author=self.user)
+        c2 = doc.commit(description="Commit A2", text=u"""
+Line #1 *
+
+Line #2
+
+Line #3
+""", author=self.user)
+        c3 = doc.commit(description="Commit B1", text=u"""
+Line #1
+
+Line #2 **
+
+Line #3
+""", parent=c1, author=self.user)
+        c4 = doc.commit(description="Commit C1", text=u"""
+Line #1 *
+
+Line #2
+
+Line #3 ***
+""", parent=c2, author=self.user)
+        self.assertEqual(doc.change_set.count(), 7)
+        self.assertTextEqual(doc.materialize(), u"""
+Line #1 *
+
+Line #2 **
+
+Line #3 ***
+""")
+
diff --git a/apps/dvcs/urls.py b/apps/dvcs/urls.py
new file mode 100644
index 00000000..d1e1e296
--- /dev/null
+++ b/apps/dvcs/urls.py
@@ -0,0 +1,6 @@
+# -*- coding: utf-8
+from django.conf.urls.defaults import *
+
+urlpatterns = patterns('dvcs.views',
+    url(r'^data/(?P[^/]+)/(?P.*)$', 'document_data', name='storage_document_data'),
+)
diff --git a/apps/dvcs/views.py b/apps/dvcs/views.py
new file mode 100644
index 00000000..7918e96c
--- /dev/null
+++ b/apps/dvcs/views.py
@@ -0,0 +1,21 @@
+# Create your views here.
+from django.views.generic.simple import direct_to_template
+from django import http
+from dvcs.models import Document
+
+def document_list(request, template_name="dvcs/document_list.html"):
+    return direct_to_template(request, template_name, {
+        "documents": Document.objects.all(),
+    })
+
+def document_data(request, document_id, version=None):
+    doc = Document.objects.get(pk=document_id)
+    return http.HttpResponse(doc.materialize(version or None), content_type="text/plain")
+
+def document_history(request, docid, template_name="dvcs/document_history.html"):
+    document = Document.objects.get(pk=docid)
+    return direct_to_template(request, template_name, {
+        "document": document,
+        "changes": document.history(),
+    })
+
diff --git a/apps/wiki/constants.py b/apps/wiki/constants.py
deleted file mode 100644
index 6781a48e..00000000
--- a/apps/wiki/constants.py
+++ /dev/null
@@ -1,21 +0,0 @@
-# -*- coding: utf-8 -*-
-from django.utils.translation import ugettext_lazy as _
-
-DOCUMENT_STAGES = (
-    ("", u"-----"),
-    ("first_correction", _(u"First correction")),
-    ("tagging", _(u"Tagging")),
-    ("proofreading", _(u"Initial Proofreading")),
-    ("annotation-proofreading", _(u"Annotation Proofreading")),
-    ("modernisation", _(u"Modernisation")),
-    ("annotations", _(u"Annotations")),
-    ("themes", _(u"Themes")),
-    ("editor-proofreading", _(u"Editor's Proofreading")),
-    ("technical-editor-proofreading", _(u"Technical Editor's Proofreading")),
-)
-
-DOCUMENT_TAGS = DOCUMENT_STAGES + \
-    (("ready-to-publish", _(u"Ready to publish")),)
-
-DOCUMENT_TAGS_DICT = dict(DOCUMENT_TAGS)
-DOCUMENT_STAGES_DICT = dict(DOCUMENT_STAGES)
diff --git a/apps/wiki/forms.py b/apps/wiki/forms.py
index 74934bd2..a8a57c88 100644
--- a/apps/wiki/forms.py
+++ b/apps/wiki/forms.py
@@ -4,64 +4,22 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django import forms
-from wiki.constants import DOCUMENT_TAGS, DOCUMENT_STAGES
 from django.utils.translation import ugettext_lazy as _
 
+from catalogue.models import Chunk
 
-class DocumentTagForm(forms.Form):
+
+class DocumentPubmarkForm(forms.Form):
     """
-        Form for tagging revisions.
+        Form for marking revisions for publishing.
     """
 
     id = forms.CharField(widget=forms.HiddenInput)
-    tag = forms.ChoiceField(choices=DOCUMENT_TAGS)
+    publishable = forms.BooleanField(required=False, initial=True,
+            label=_('Publishable'))
     revision = forms.IntegerField(widget=forms.HiddenInput)
 
 
-class DocumentCreateForm(forms.Form):
-    """
-        Form used for creating new documents.
-    """
-    title = forms.CharField()
-    id = forms.RegexField(regex=ur"^[-\wÄ
ÄÄÅÅóÅźżÄÄÄÅÅÃÅŹŻ]+$")
-    file = forms.FileField(required=False)
-    text = forms.CharField(required=False, widget=forms.Textarea)
-
-    def clean(self):
-        file = self.cleaned_data['file']
-
-        if file is not None:
-            try:
-                self.cleaned_data['text'] = file.read().decode('utf-8')
-            except UnicodeDecodeError:
-                raise forms.ValidationError("Text file must be UTF-8 encoded.")
-
-        if not self.cleaned_data["text"]:
-            raise forms.ValidationError("You must either enter text or upload a file")
-
-        return self.cleaned_data
-
-
-class DocumentsUploadForm(forms.Form):
-    """
-        Form used for uploading new documents.
-    """
-    file = forms.FileField(required=True, label=_('ZIP file'))
-
-    def clean(self):
-        file = self.cleaned_data['file']
-
-        import zipfile
-        try:
-            z = self.cleaned_data['zip'] = zipfile.ZipFile(file)
-        except zipfile.BadZipfile:
-            raise forms.ValidationError("Should be a ZIP file.")
-        if z.testzip():
-            raise forms.ValidationError("ZIP file corrupt.")
-
-        return self.cleaned_data
-
-
 class DocumentTextSaveForm(forms.Form):
     """
     Form for saving document's text:
@@ -94,8 +52,8 @@ class DocumentTextSaveForm(forms.Form):
         help_text=_(u"Describe changes you made."),
     )
 
-    stage_completed = forms.ChoiceField(
-        choices=DOCUMENT_STAGES,
+    stage_completed = forms.ModelChoiceField(
+        queryset=Chunk.tag_model.objects.all(),
         required=False,
         label=_(u"Completed"),
         help_text=_(u"If you completed a life cycle stage, select it."),
diff --git a/apps/wiki/helpers.py b/apps/wiki/helpers.py
index f072ef91..dace3d00 100644
--- a/apps/wiki/helpers.py
+++ b/apps/wiki/helpers.py
@@ -1,8 +1,9 @@
+from datetime import datetime
+from functools import wraps
+
 from django import http
 from django.utils import simplejson as json
 from django.utils.functional import Promise
-from datetime import datetime
-from functools import wraps
 
 
 class ExtendedEncoder(json.JSONEncoder):
@@ -58,74 +59,3 @@ def ajax_require_permission(permission):
             return view(request, *args, **kwargs)
         return authorized_view
     return decorator
-
-import collections
-
-def recursive_groupby(iterable):
-    """
-#    >>> recursive_groupby([1,2,3,4,5])
-#    [1, 2, 3, 4, 5]
-
-    >>> recursive_groupby([[1]])
-    [1]
-
-    >>> recursive_groupby([('a', 1),('a', 2), 3, ('b', 4), 5])
-    ['a', [1, 2], 3, 'b', [4], 5]
-
-    >>> recursive_groupby([('a', 'x', 1),('a', 'x', 2), ('a', 'x', 3)])
-    ['a', ['x', [1, 2, 3]]]
-
-    """
-
-    def _generator(iterator):
-        group = None
-        grouper = None
-
-        for item in iterator:
-            if not isinstance(item, collections.Sequence):
-                if grouper is not None:
-                    yield grouper
-                    if len(group):
-                        yield recursive_groupby(group)
-                    group = None
-                    grouper = None
-                yield item
-                continue
-            elif len(item) == 1:
-                if grouper is not None:
-                    yield grouper
-                    if len(group):
-                        yield recursive_groupby(group)
-                    group = None
-                    grouper = None
-                yield item[0]
-                continue
-            elif not len(item):
-                continue
-
-            if grouper is None:
-                group = [item[1:]]
-                grouper = item[0]
-                continue
-
-            if grouper != item[0]:
-                if grouper is not None:
-                    yield grouper
-                    if len(group):
-                        yield recursive_groupby(group)
-                    group = None
-                    grouper = None
-                group = [item[1:]]
-                grouper = item[0]
-                continue
-
-            group.append(item[1:])
-
-        if grouper is not None:
-            yield grouper
-            if len(group):
-                yield recursive_groupby(group)
-            group = None
-            grouper = None
-
-    return list(_generator(iterable))
diff --git a/apps/wiki/locale/pl/LC_MESSAGES/django.mo b/apps/wiki/locale/pl/LC_MESSAGES/django.mo
index 8ec3fdf2..f841945b 100644
Binary files a/apps/wiki/locale/pl/LC_MESSAGES/django.mo and b/apps/wiki/locale/pl/LC_MESSAGES/django.mo differ
diff --git a/apps/wiki/locale/pl/LC_MESSAGES/django.po b/apps/wiki/locale/pl/LC_MESSAGES/django.po
index 0dbb13a5..c760f3a7 100644
--- a/apps/wiki/locale/pl/LC_MESSAGES/django.po
+++ b/apps/wiki/locale/pl/LC_MESSAGES/django.po
@@ -7,8 +7,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Platforma Redakcyjna\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2011-03-07 12:31+0100\n"
-"PO-Revision-Date: 2011-03-07 12:31+0100\n"
+"POT-Creation-Date: 2011-06-21 13:41+0200\n"
+"PO-Revision-Date: 2011-06-21 13:46+0100\n"
 "Last-Translator: Radek Czajka \n"
 "Language-Team: Fundacja Nowoczesna Polska \n"
 "Language: \n"
@@ -16,130 +16,223 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: constants.py:6
-msgid "First correction"
-msgstr "Autokorekta"
-
-#: constants.py:7
-msgid "Tagging"
-msgstr "Tagowanie"
-
-#: constants.py:8
-msgid "Initial Proofreading"
-msgstr "Korekta"
-
-#: constants.py:9
-msgid "Annotation Proofreading"
-msgstr "Sprawdzenie przypisów źródÅa"
-
-#: constants.py:10
-msgid "Modernisation"
-msgstr "UwspóÅczeÅnienie"
-
-#: constants.py:11
-#: templates/wiki/tabs/annotations_view_item.html:3
-msgid "Annotations"
-msgstr "Przypisy"
-
-#: constants.py:12
-msgid "Themes"
-msgstr "Motywy"
-
-#: constants.py:13
-msgid "Editor's Proofreading"
-msgstr "Ostateczna redakcja literacka"
-
-#: constants.py:14
-msgid "Technical Editor's Proofreading"
-msgstr "Ostateczna redakcja techniczna"
-
-#: constants.py:18
-msgid "Ready to publish"
+#: forms.py:32
+msgid "Publishable"
 msgstr "Gotowe do publikacji"
 
-#: forms.py:49
+#: forms.py:68
 msgid "ZIP file"
 msgstr "Plik ZIP"
 
-#: forms.py:80
-#: forms.py:118
+#: forms.py:99
+#: forms.py:137
 msgid "Author"
 msgstr "Autor"
 
-#: forms.py:81
-#: forms.py:119
+#: forms.py:100
+#: forms.py:138
 msgid "Your name"
 msgstr "ImiÄ i nazwisko"
 
-#: forms.py:86
-#: forms.py:124
+#: forms.py:105
+#: forms.py:143
 msgid "Author's email"
 msgstr "E-mail autora"
 
-#: forms.py:87
-#: forms.py:125
+#: forms.py:106
+#: forms.py:144
 msgid "Your email address, so we can show a gravatar :)"
 msgstr "Adres e-mail, żebyÅmy mogli pokazaÄ gravatar :)"
 
-#: forms.py:93
-#: forms.py:131
+#: forms.py:112
+#: forms.py:150
 msgid "Your comments"
 msgstr "Twój komentarz"
 
-#: forms.py:94
+#: forms.py:113
 msgid "Describe changes you made."
 msgstr "Opisz swoje zmiany"
 
-#: forms.py:100
+#: forms.py:119
 msgid "Completed"
 msgstr "UkoÅczono"
 
-#: forms.py:101
+#: forms.py:120
 msgid "If you completed a life cycle stage, select it."
 msgstr "JeÅli zostaÅ ukoÅczony etap prac, wskaż go."
 
-#: forms.py:132
+#: forms.py:151
 msgid "Describe the reason for reverting."
 msgstr "Opisz powód przywrócenia."
 
-#: models.py:93
-#, python-format
-msgid "Finished stage: %s"
-msgstr "UkoÅczony etap: %s"
+#: forms.py:176
+#: forms.py:190
+msgid "Chunk with this slug already exists"
+msgstr "CzÄÅÄ z tym slugiem już istnieje"
+
+#: forms.py:202
+msgid "Append to"
+msgstr "DoÅÄ
cz do"
+
+#: models.py:25
+msgid "title"
+msgstr "tytuÅ"
+
+#: models.py:26
+msgid "slug"
+msgstr ""
+
+#: models.py:27
+msgid "scan gallery name"
+msgstr "nazwa galerii skanów"
+
+#: models.py:29
+msgid "parent"
+msgstr "rodzic"
+
+#: models.py:30
+msgid "parent number"
+msgstr "numeracja rodzica"
+
+#: models.py:40
+msgid "book"
+msgstr "ksiÄ
żka"
+
+#: models.py:41
+msgid "books"
+msgstr "ksiÄ
żki"
 
-#: models.py:152
+#: models.py:206
 msgid "name"
 msgstr "nazwa"
 
-#: models.py:156
+#: models.py:210
 msgid "theme"
 msgstr "motyw"
 
-#: models.py:157
+#: models.py:211
 msgid "themes"
 msgstr "motywy"
 
-#: views.py:168
+#: views.py:241
 #, python-format
-msgid "Title already used for %s"
-msgstr "Nazwa taka sama jak dla pliku %s"
+msgid "Slug already used for %s"
+msgstr "Slug taki sam jak dla pliku %s"
 
-#: views.py:170
-msgid "Title already used in repository."
-msgstr "Plik o tej nazwie już istnieje w repozytorium."
+#: views.py:243
+msgid "Slug already used in repository."
+msgstr "Dokument o tym slugu już istnieje w repozytorium."
 
-#: views.py:176
+#: views.py:249
 msgid "File should be UTF-8 encoded."
 msgstr "Plik powinien mieÄ kodowanie UTF-8."
 
-#: views.py:379
+#: views.py:655
 msgid "Tag added"
 msgstr "Dodano tag"
 
-#: templates/wiki/base.html:15
+#: views.py:677
+msgid "Revision marked"
+msgstr "Wersja oznaczona"
+
+#: views.py:679
+msgid "Nothing changed"
+msgstr "Nic nie ulegÅo zmianie"
+
+#: templates/wiki/base.html:9
 msgid "Platforma Redakcyjna"
 msgstr ""
 
+#: templates/wiki/book_append_to.html:8
+msgid "Append book"
+msgstr "DoÅÄ
cz ksiÄ
żkÄ"
+
+#: templates/wiki/book_detail.html:6
+#: templates/wiki/book_detail.html.py:46
+msgid "edit"
+msgstr "edytuj"
+
+#: templates/wiki/book_detail.html:16
+msgid "add basic document structure"
+msgstr "dodaj podstawowÄ
 strukturÄ dokumentu"
+
+#: templates/wiki/book_detail.html:20
+msgid "change master tag to"
+msgstr "zmieÅ tak master na"
+
+#: templates/wiki/book_detail.html:24
+msgid "add begin trimming tag"
+msgstr "dodaj poczÄ
tkowy ogranicznik"
+
+#: templates/wiki/book_detail.html:28
+msgid "add end trimming tag"
+msgstr "dodaj koÅcowy ogranicznik"
+
+#: templates/wiki/book_detail.html:34
+msgid "unstructured text"
+msgstr "tekst bez struktury"
+
+#: templates/wiki/book_detail.html:38
+msgid "unknown XML"
+msgstr "nieznany XML"
+
+#: templates/wiki/book_detail.html:42
+msgid "broken document"
+msgstr "uszkodzony dokument"
+
+#: templates/wiki/book_detail.html:60
+msgid "Apply fixes"
+msgstr "Wykonaj zmiany"
+
+#: templates/wiki/book_detail.html:66
+msgid "Append to other book"
+msgstr "DoÅÄ
cz do innej ksiÄ
żki"
+
+#: templates/wiki/book_detail.html:68
+msgid "Last published"
+msgstr "Ostatnio opublikowano"
+
+#: templates/wiki/book_detail.html:72
+msgid "Full XML"
+msgstr "PeÅny XML"
+
+#: templates/wiki/book_detail.html:73
+msgid "HTML version"
+msgstr "Wersja HTML"
+
+#: templates/wiki/book_detail.html:74
+msgid "TXT version"
+msgstr "Wersja TXT"
+
+#: templates/wiki/book_detail.html:76
+msgid "EPUB version"
+msgstr "Wersja EPUB"
+
+#: templates/wiki/book_detail.html:77
+msgid "PDF version"
+msgstr "Wersja PDF"
+
+#: templates/wiki/book_detail.html:90
+#: templates/wiki/tabs/summary_view.html:30
+msgid "Publish"
+msgstr "Opublikuj"
+
+#: templates/wiki/book_detail.html:94
+msgid "This book cannot be published yet"
+msgstr "Ta ksiÄ
żka nie może jeszcze zostaÄ opublikowana"
+
+#: templates/wiki/book_edit.html:8
+#: templates/wiki/chunk_edit.html:8
+#: templates/wiki/document_details_base.html:35
+#: templates/wiki/pubmark_dialog.html:15
+#: templates/wiki/tag_dialog.html:15
+msgid "Save"
+msgstr "Zapisz"
+
+#: templates/wiki/chunk_add.html:8
+msgid "Add chunk"
+msgstr "Dodaj czÄÅÄ"
+
 #: templates/wiki/diff_table.html:5
 msgid "Old version"
 msgstr "Stara wersja"
@@ -156,92 +249,102 @@ msgstr "Utwórz dokument"
 msgid "Click to open/close gallery"
 msgstr "Kliknij, aby (ro)zwinÄ
Ä galeriÄ"
 
-#: templates/wiki/document_details_base.html:36
+#: templates/wiki/document_details_base.html:31
 msgid "Help"
 msgstr "Pomoc"
 
-#: templates/wiki/document_details_base.html:38
+#: templates/wiki/document_details_base.html:33
 msgid "Version"
 msgstr "Wersja"
 
-#: templates/wiki/document_details_base.html:38
+#: templates/wiki/document_details_base.html:33
 msgid "Unknown"
 msgstr "nieznana"
 
-#: templates/wiki/document_details_base.html:40
-#: templates/wiki/tag_dialog.html:15
-msgid "Save"
-msgstr "Zapisz"
-
-#: templates/wiki/document_details_base.html:41
+#: templates/wiki/document_details_base.html:36
 msgid "Save attempt in progress"
 msgstr "Trwa zapisywanie"
 
-#: templates/wiki/document_details_base.html:42
+#: templates/wiki/document_details_base.html:37
 msgid "There is a newer version of this document!"
 msgstr "Istnieje nowsza wersja tego dokumentu!"
 
-#: templates/wiki/document_list.html:30
+#: templates/wiki/document_list.html:31
 msgid "Clear filter"
 msgstr "WyczyÅÄ filtr"
 
-#: templates/wiki/document_list.html:48
+#: templates/wiki/document_list.html:46
+msgid "No books found."
+msgstr "Nie znaleziono ksiÄ
żek."
+
+#: templates/wiki/document_list.html:89
 msgid "Your last edited documents"
 msgstr "Twoje ostatnie edycje"
 
-#: templates/wiki/document_upload.html:9
+#: templates/wiki/document_upload.html:8
 msgid "Bulk documents upload"
 msgstr "Hurtowe dodawanie dokumentów"
 
-#: templates/wiki/document_upload.html:12
+#: templates/wiki/document_upload.html:11
 msgid "Please submit a ZIP with UTF-8 encoded XML files. Files not ending with .xml will be ignored."
 msgstr "ProszÄ wskazaÄ archiwum ZIP z plikami XML w kodowaniu UTF-8. Pliki nie koÅczÄ
ce siÄ na .xml zostanÄ
 zignorowane."
 
-#: templates/wiki/document_upload.html:17
+#: templates/wiki/document_upload.html:16
+#: templatetags/wiki.py:36
 msgid "Upload"
-msgstr "Dodaj"
+msgstr "ZaÅaduj"
 
-#: templates/wiki/document_upload.html:24
+#: templates/wiki/document_upload.html:23
 msgid "There have been some errors. No files have been added to the repository."
 msgstr "WystÄ
piÅy bÅÄdy. Å»adne pliki nie zostaÅy dodane do repozytorium."
 
-#: templates/wiki/document_upload.html:25
+#: templates/wiki/document_upload.html:24
 msgid "Offending files"
 msgstr "BÅÄdne pliki"
 
-#: templates/wiki/document_upload.html:33
+#: templates/wiki/document_upload.html:32
 msgid "Correct files"
 msgstr "Poprawne pliki"
 
-#: templates/wiki/document_upload.html:44
+#: templates/wiki/document_upload.html:43
 msgid "Files have been successfully uploaded to the repository."
 msgstr "Pliki zostaÅy dodane do repozytorium."
 
-#: templates/wiki/document_upload.html:45
+#: templates/wiki/document_upload.html:44
 msgid "Uploaded files"
 msgstr "Dodane pliki"
 
-#: templates/wiki/document_upload.html:55
+#: templates/wiki/document_upload.html:54
 msgid "Skipped files"
 msgstr "PominiÄte pliki"
 
-#: templates/wiki/document_upload.html:56
+#: templates/wiki/document_upload.html:55
 msgid "Files skipped due to no .xml extension"
 msgstr "Pliki pominiÄte z powodu braku rozszerzenia .xml."
 
-#: templates/wiki/revert_dialog.html:38
-msgid "Revert"
-msgstr "PrzywróÄ"
-
+#: templates/wiki/pubmark_dialog.html:16
 #: templates/wiki/revert_dialog.html:39
 #: templates/wiki/tag_dialog.html:16
 msgid "Cancel"
 msgstr "Anuluj"
 
+#: templates/wiki/revert_dialog.html:38
+msgid "Revert"
+msgstr "PrzywróÄ"
+
+#: templates/wiki/user_list.html:7
+#: templatetags/wiki.py:33
+msgid "Users"
+msgstr "Użytkownicy"
+
 #: templates/wiki/tabs/annotations_view.html:9
 msgid "all"
 msgstr "wszystkie"
 
+#: templates/wiki/tabs/annotations_view_item.html:3
+msgid "Annotations"
+msgstr "Przypisy"
+
 #: templates/wiki/tabs/gallery_view.html:7
 msgid "Previous"
 msgstr "Poprzednie"
@@ -267,8 +370,8 @@ msgid "Compare versions"
 msgstr "Porównaj wersje"
 
 #: templates/wiki/tabs/history_view.html:7
-msgid "Mark version"
-msgstr "Oznacz wersjÄ"
+msgid "Mark for publishing"
+msgstr "Oznacz do publikacji"
 
 #: templates/wiki/tabs/history_view.html:9
 msgid "Revert document"
@@ -315,43 +418,27 @@ msgstr "Znajdź i zamieÅ"
 msgid "Source code"
 msgstr "Kod źródÅowy"
 
-#: templates/wiki/tabs/summary_view.html:10
+#: templates/wiki/tabs/summary_view.html:9
 msgid "Title"
 msgstr "TytuÅ"
 
-#: templates/wiki/tabs/summary_view.html:15
+#: templates/wiki/tabs/summary_view.html:14
 msgid "Document ID"
 msgstr "ID dokumentu"
 
-#: templates/wiki/tabs/summary_view.html:19
+#: templates/wiki/tabs/summary_view.html:18
 msgid "Current version"
 msgstr "Aktualna wersja"
 
-#: templates/wiki/tabs/summary_view.html:22
+#: templates/wiki/tabs/summary_view.html:21
 msgid "Last edited by"
 msgstr "Ostatnio edytowane przez"
 
-#: templates/wiki/tabs/summary_view.html:26
+#: templates/wiki/tabs/summary_view.html:25
 msgid "Link to gallery"
 msgstr "Link do galerii"
 
-#: templates/wiki/tabs/summary_view.html:31
-msgid "Characters in document"
-msgstr "Znaków w dokumencie"
-
-#: templates/wiki/tabs/summary_view.html:32
-msgid "pages"
-msgstr "stron"
-
-#: templates/wiki/tabs/summary_view.html:32
-msgid "untagged"
-msgstr "nieotagowane"
-
-#: templates/wiki/tabs/summary_view.html:35
-msgid "Publish"
-msgstr "Opublikuj"
-
-#: templates/wiki/tabs/summary_view_item.html:4
+#: templates/wiki/tabs/summary_view_item.html:3
 msgid "Summary"
 msgstr "Podsumowanie"
 
@@ -367,8 +454,55 @@ msgstr "Wstaw przypis"
 msgid "Visual editor"
 msgstr "Edytor wizualny"
 
+#: templatetags/wiki.py:30
+msgid "Assigned to me"
+msgstr "Przypisane do mnie"
+
+#: templatetags/wiki.py:32
+msgid "Unassigned"
+msgstr "Nie przypisane"
+
+#: templatetags/wiki.py:34
+msgid "All"
+msgstr "Wszystkie"
+
+#: templatetags/wiki.py:35
+msgid "Add"
+msgstr "Dodaj"
+
+#: templatetags/wiki.py:39
+msgid "Admin"
+msgstr "Administracja"
+
+#~ msgid "First correction"
+#~ msgstr "Autokorekta"
+
+#~ msgid "Tagging"
+#~ msgstr "Tagowanie"
+
+#~ msgid "Initial Proofreading"
+#~ msgstr "Korekta"
+
+#~ msgid "Annotation Proofreading"
+#~ msgstr "Sprawdzenie przypisów źródÅa"
+
+#~ msgid "Modernisation"
+#~ msgstr "UwspóÅczeÅnienie"
+
+#~ msgid "Themes"
+#~ msgstr "Motywy"
+
+#~ msgid "Editor's Proofreading"
+#~ msgstr "Ostateczna redakcja literacka"
+
+#~ msgid "Technical Editor's Proofreading"
+#~ msgstr "Ostateczna redakcja techniczna"
+
+#~ msgid "Finished stage: %s"
+#~ msgstr "UkoÅczony etap: %s"
+
 #~ msgid "Refresh"
 #~ msgstr "OdÅwież"
+
 #~ msgid "Insert special character"
 #~ msgstr "Wstaw znak specjalny"
-
diff --git a/apps/wiki/models.py b/apps/wiki/models.py
index 7cb20c65..c539908d 100644
--- a/apps/wiki/models.py
+++ b/apps/wiki/models.py
@@ -4,150 +4,12 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.db import models
-import re
-import os
-import vstorage
-from vstorage import DocumentNotFound
-from wiki import settings, constants
-from slughifi import slughifi
 from django.utils.translation import ugettext_lazy as _
 
-from django.http import Http404
-
 import logging
 logger = logging.getLogger("fnp.wiki")
 
 
-# _PCHARS_DICT = dict(zip((ord(x) for x in u"ÄÄÄÅÅÃÅŻŹÄ
ÄÄÅÅóÅżź "), u"ACELNOSZZacelnoszz_"))
-_PCHARS_DICT = dict(zip((ord(x) for x in u" "), u"_"))
-
-# I know this is barbaric, but I didn't find a better solution ;(
-def split_name(name):
-    parts = name.translate(_PCHARS_DICT).split('__')
-    return parts
-
-def join_name(*parts, **kwargs):
-    name = u'__'.join(p.translate(_PCHARS_DICT) for p in parts)
-    logger.info("JOIN %r -> %r", parts, name)
-    return name
-
-def normalize_name(name):
-    """
-    >>> normalize_name("gÄ
ska".decode('utf-8'))
-    u'g\u0105ska'
-    """
-    return unicode(name).translate(_PCHARS_DICT)
-
-STAGE_TAGS_RE = re.compile(r'^#stage-finished: (.*)$', re.MULTILINE)
-
-
-class DocumentStorage(object):
-    def __init__(self, path):
-        self.vstorage = vstorage.VersionedStorage(path)
-
-    def get(self, name, revision=None):
-        text, rev = self.vstorage.page_text(name, revision)
-        return Document(self, name=name, text=text, revision=rev)
-
-    def get_by_tag(self, name, tag):
-        text, rev = self.vstorage.page_text_by_tag(name, tag)
-        return Document(self, name=name, text=text, revision=rev)
-
-    def revert(self, name, revision, **commit_args):
-        self.vstorage.revert(name, revision, **commit_args)
-
-    def get_or_404(self, *args, **kwargs):
-        try:
-            return self.get(*args, **kwargs)
-        except DocumentNotFound:
-            raise Http404
-
-    def put(self, document, author, comment, parent=None):
-        self.vstorage.save_text(
-                title=document.name,
-                text=document.text,
-                author=author,
-                comment=comment,
-                parent=parent)
-
-        return document
-
-    def create_document(self, text, name):
-        title = u', '.join(p.title() for p in split_name(name))
-
-        if text is None:
-            text = u''
-
-        document = Document(self, name=name, text=text, title=title)
-        return self.put(document, u"", u"Document created.")
-
-    def delete(self, name, author, comment):
-        self.vstorage.delete_page(name, author, comment)
-
-    def all(self):
-        return list(self.vstorage.all_pages())
-
-    def history(self, title):
-        def stage_desc(match):
-            stage = match.group(1)
-            return _("Finished stage: %s") % constants.DOCUMENT_STAGES_DICT[stage]
-
-        for changeset in self.vstorage.page_history(title):
-            changeset['description'] = STAGE_TAGS_RE.sub(stage_desc, changeset['description'])
-            yield changeset
-
-    def doc_meta(self, title, revision=None):
-        return self.vstorage.page_meta(title, revision)
-
-
-
-class Document(object):
-    META_REGEX = re.compile(r'\s*', re.DOTALL | re.MULTILINE)
-
-    def __init__(self, storage, **kwargs):
-        self.storage = storage
-        for attr, value in kwargs.iteritems():
-            setattr(self, attr, value)
-
-    def add_tag(self, tag, revision, author):
-        """ Add document specific tag """
-        logger.debug("Adding tag %s to doc %s version %d", tag, self.name, revision)
-        self.storage.vstorage.add_page_tag(self.name, revision, tag, user=author)
-
-    @property
-    def plain_text(self):
-        return re.sub(self.META_REGEX, '', self.text, 1)
-
-    def meta(self):
-        result = {}
-
-        m = re.match(self.META_REGEX, self.text)
-        if m:
-            for line in m.group(1).split('\n'):
-                try:
-                    k, v = line.split(':', 1)
-                    result[k.strip()] = v.strip()
-                except ValueError:
-                    continue
-
-        gallery = result.get('gallery', slughifi(self.name.replace(' ', '_')))
-
-        if gallery.startswith('/'):
-            gallery = os.path.basename(gallery)
-
-        result['gallery'] = gallery
-        return result
-
-    def info(self):
-        return self.storage.vstorage.page_meta(self.name, self.revision)
-
-def getstorage():
-    return DocumentStorage(settings.REPOSITORY_PATH)
-
-#
-# Django models
-#
-
 class Theme(models.Model):
     name = models.CharField(_('name'), max_length=50, unique=True)
 
diff --git a/apps/wiki/settings.py b/apps/wiki/settings.py
index 0a227e4a..50f49d8b 100644
--- a/apps/wiki/settings.py
+++ b/apps/wiki/settings.py
@@ -1,7 +1,3 @@
 from django.conf import settings
 
-if not hasattr(settings, 'WIKI_REPOSITORY_PATH'):
-    raise Exception('You must set WIKI_REPOSITORY_PATH in your settings file.')
-
-REPOSITORY_PATH = settings.WIKI_REPOSITORY_PATH
 GALLERY_URL = settings.MEDIA_URL + 'images/'
diff --git a/apps/wiki/templates/wiki/base.html b/apps/wiki/templates/wiki/base.html
deleted file mode 100644
index f88fac31..00000000
--- a/apps/wiki/templates/wiki/base.html
+++ /dev/null
@@ -1,24 +0,0 @@
-{% extends "base.html" %}
-{% load compressed i18n %}
-
-{% block title %}{{ document_name }} - {{ block.super }}{% endblock %}
-
-{% block extrahead %}
-{% compressed_css 'listing' %}
-{% endblock %}
-
-{% block extrabody %}
-{% compressed_js 'listing' %}
-{% endblock %}
-
-{% block maincontent %}
- {% trans "Platforma Redakcyjna" %}
{% trans "Platforma Redakcyjna" %}
-
-	{% block leftcolumn %}
-	{% endblock leftcolumn %}
-
-
-	{% block rightcolumn %}
-	{% endblock rightcolumn %}
-
-{% endblock maincontent %}
\ No newline at end of file
diff --git a/apps/wiki/templates/wiki/document_create_missing.html b/apps/wiki/templates/wiki/document_create_missing.html
deleted file mode 100644
index 351e87a2..00000000
--- a/apps/wiki/templates/wiki/document_create_missing.html
+++ /dev/null
@@ -1,13 +0,0 @@
-{% extends "wiki/base.html" %}
-{% load i18n %}
-
-{% block leftcolumn %}
-	
-{% endblock leftcolumn %}
-
-{% block rightcolumn %}
-{% endblock rightcolumn %}
\ No newline at end of file
diff --git a/apps/wiki/templates/wiki/document_details.html b/apps/wiki/templates/wiki/document_details.html
index 934a8ac6..d95603f6 100644
--- a/apps/wiki/templates/wiki/document_details.html
+++ b/apps/wiki/templates/wiki/document_details.html
@@ -43,4 +43,5 @@
     {% include "wiki/save_dialog.html" %}
     {% include "wiki/revert_dialog.html" %}
     {% include "wiki/tag_dialog.html" %}
+    {% include "wiki/pubmark_dialog.html" %}
 {% endblock %}
diff --git a/apps/wiki/templates/wiki/document_details_base.html b/apps/wiki/templates/wiki/document_details_base.html
index 03231330..76711dd9 100644
--- a/apps/wiki/templates/wiki/document_details_base.html
+++ b/apps/wiki/templates/wiki/document_details_base.html
@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 {% load toolbar_tags i18n %}
 
-{% block title %}{{ document.name }} - {{ block.super }}{% endblock %}
+{% block title %}{{ book.title }} - {{ block.super }}{% endblock %}
 {% block extrahead %}
 {% load compressed %}
 {% compressed_css 'detail' %}
@@ -16,21 +16,17 @@
 
 {% block maincontent %}
 
+	data-book="{{ chunk.book.slug }}" data-chunk="{{ chunk.slug }}" style="display:none">
 
-	{% for k, v in document_meta.items %}
-		{{ v }}
-	{% endfor %}
-
-	{% for k, v in document_info.items %}
-		{{ v }}
-	{% endfor %}
+	{{ chunk.book.gallery }}
+	{{ revision }}
+    {{ request.GET.diff }}
 
 	{% block meta-extra %} {% endblock %}