Fix old migration containers, add user field dynamic
Remove child class of unique together (Meta) in container model class
Create migration containers, remove field child_class unique_together
Merge branch 'master' of github.com:opps/opps

* 'master' of github.com:opps/opps:
  Fixed method all_images when object dont have main_image
  Add tag field on fileupload image_form
  Add js helper functions on fileupload
  Add new helper buttons on fileupload
  PEP8 Fixes
  add: JSONP request support and 'jsonpCallback' as default callback function
  fix: print leftover
  Add missing translation on fileupload
  PEP8
  Add gexttext translation on fileupload templatetags
  Add more fileupload translations
  added more fields to search_fields in admin
  Added source field in Post admin