Raise error if resources config hash is not a hash.
Cleanup theme config generator; no reason we should silently alter it.
?to_<resource> contextual helpers should return ModelView instances if available.
Allow ModelView instances to use Hash style setters.
Provide default sorting strategy for ModelView instances.
Add linebreak to raw_code for markdown preservation.
Include widget stylesheets in stylesheet bundle.

Will likely overhaul this again but for now it works.
Add media compiler.