Loading the URL template tag from future is not necessary anymore
Remove more occurrences of loading the URL template tag from future
Do not pass a callable to queryset.filter() (deprecated in Django 1.9)
Expose get_model and get_models without deprecation warnings
ensure_completely_loaded: Put Django 1.7-code first
Fix many deprecation warnings
Fix a few warnings related to not closing opened files
Fix a test; jpeg thumbnails also have .jpg as extension...

How did this work at all before?