Remove another queryset/get_queryset compatibility fallback
Start the deprecation of feincms.views.cbv

We have switched to class-based views a long time ago.
MediaFileForeignKey sets MediaFile as default model
Move show_content_type_selection_widget to feincms_admin_tags, that it where it belongs
More Django<1.6 compatibility code removal
Stop invoking get_model for each request
Move feincms_page_tags up, and stop reimplementing stuff in django-mptt
Rename filterspecs to filters and ensure that they are actually registered
Remove collect_dict_values, it should have been removed a long time ago

It belonged to our custom implementation of prefetch_related()...