Django-multilingual-tags

- added new migrations

- prepared app for Django 1.8
- fixing call for distinct in TagManager
- fixing tags being incorrectly queried and then accidentally duplicated
- added validation for tag name length
- prepared app for custom user models
- added latest dev version of jquery-typeahead-tagging
- Calling get_user in save instead of clean to have a saved instance

- updated version of jquery-typeahead-tagging

- Added possibility to store the user on a TaggedItem

- allowing limiting the number of tags
- updated typeahead-tagging

- made TaggingFormMixin work with create forms