Add UserSet model
Merge branch 'develop' into feature/user-sets
Merge branch 'develop' into feature/user-sets
Merge branch 'develop' into feature/user-sets
Rename urls and views from 'set' to 'named set'
Rename Set to NamedSet
Rename db table from 'user_set' to 'userset' to be consistent with what Django names the M2M table
Make sure to create UserSet.comics M2M table in migration
Replace top  comic views with user set views
Merge branch 'develop' into feature/user-sets

Conflicts:
	comics/core/templates/base.html
	comics/core/templates/core/release-list.html
	comics/sets/templates/sets/new.html
Merge branch 'develop' into feature/user-sets

Conflicts:
	comics/core/templates/base.html
	comics/core/templates/core/release-list.html
Add dummy buttons for adding to and removing from user sets
Update 'playervsplayer' crawler after breaking feed change
Add view which toggles if a comic is included in the user's set
Add user_set and user_set_comics to context of all templates
Move static dir out of core app as it is shared by all apps
Hide one of the add/remove buttons depending on what is currently in the user's set
Use os.path.join() properly
Move static dir out of core app as it is shared by all apps
Update navigation.js code formatting