Merge branch 'pdf'

diff --combined librarian/__init__.py
index 619650d,a672486..8f5cf1a
--- 1/librarian/__init__.py
--- 2/librarian/__init__.py
+++ b/librarian/__init__.py
@@@ -8,11 -8,11 +8,11 @@@ import o
  class ParseError(Exception):
      def __str__(self):
          """ Dirty workaround for Python Unicode handling problems. """
-         return self.message.message
+         return self.message
  
      def __unicode__(self):
          """ Dirty workaround for Python Unicode handling problems. """
-         return self.message.message
+         return self.message
  
  class ValidationError(Exception):
      pass
@@@ -93,7 -93,6 +93,7 @@@ DEFAULT_BOOKINFO = dcparser.BookInfo
            DCNS('subject.type'): [u'Unknown'],
            DCNS('subject.genre'): [u'Unknown'],
            DCNS('date'): ['1970-01-01'],
 +          DCNS('language'): [u'pol'],
            # DCNS('date'): [creation_date],
            DCNS('publisher'): [u"Fundacja Nowoczesna Polska"],
            DCNS('description'):