tabs.append(Tab('users', _('Users'), reverse("catalogue_users")))
if user.has_perm('catalogue.add_book'):
tabs.append(Tab('create', _('Add'), reverse("catalogue_create_missing")))
tabs.append(Tab('upload', _('Upload'), reverse("catalogue_upload")))
tabs.append(Tab('users', _('Users'), reverse("catalogue_users")))
if user.has_perm('catalogue.add_book'):
tabs.append(Tab('create', _('Add'), reverse("catalogue_create_missing")))
tabs.append(Tab('upload', _('Upload'), reverse("catalogue_upload")))