SetView -- Added check to see if user has can_edit' permission. If yes delivering unpublished filersets.
Urls -- Updated source formatting of api_urls.py and urls.py.
App -- Removed dependency on django-taggit-autosuggest-select2. Suport is now optional.
Merge branch 'dev' of https://github.com/sthzg/django-filer-sets into dev