Added sane_rating_update to the apiV1 as an alternative to the standard rating parameter.
Merge pull request #123 from ToxicJojo/sane-rating-update

Added sane_rating_update to the apiV1 as an alternative to the standard rating parameter.
Make Castings polymorphic
Add Castings for staff and characters in Manga
Add Castings to full manga serializer and add template/view for it

It's one-line changes in a lot of files, really
Properly pluralize "Manga" in Ember