FIX: edit category modal with no title, empty modals that can't be closed. Added a better way to hide a modal without really closing it.
FIX: don't load post.rb a second time in dev env
remove rack cache, it has been causing trouble
instead implement an aggressive anonymous cache that is stored in redis
this cache is sitting in the front of the middleware stack enabled only in production
TODO: expire it more intelligently when stuff is created