Add some import from south in order for django migrate to work properly

Filter by category should also be tested for undefined (and not just empty string) in case no category has been defined.

Resize filters for small screen.

Twick in css.

Twick in css.

Upgrades to yui 3.10.3

Update thread_box button to new design (horizontal mirror of unthread_box)

Fixes AttributeError: 'FakeRequest' object has no attribute 'GET'

improves performence of text_view_comments by memoizing permission computations.

Add INSTALLED_APPS in settings_local for buildout to include south migration commands.

Clean south migration

Gradient of colors for commented text depends on number of comments including replies, instead of depending only on number of threads.

Better translation of help text

Sames as for changeset 516, BeautifulSoup needs fromEncoding='UTF-8'.

For some reason, BeautifulSoup wants now fromEncoding='UTF-8' in some unidentified cases.

Fix south migration problem caused by 0003_update_keys_to_textversion using TextVersion model which is updated only in 0010_auto__add_field_textversion_category_1__add_field_textversion_category, same with 0007_populate_id_key_in_comments using Comment model updated in 0011_auto__add_field_comment_category.

Reorder classes in models.py.

Definitely this is not a good idea to use ApplicationConfiguration in TextVersion model as default for category_x fields.

Reorders stuffs in models

Reorder ConfigurationManager model, because it broke co-ment lite

Do not proposed undefined categories in filter.

Fixes test for categories defined in workspace while None in textversion.

Fixes lower() applied to None string, and not empty string as changeset 506 has mistakenly fixed.

Fixes one FR translation.