Adds initial commentable architecture
Adds polymorphic comment system to posts and projects
Adds test framework for project auth and comments
Implements better method of polymorphic comments
Adds some basic styles
Finalizes auth policy for projects
Adds fixes found in testing
Adds fixes for polymorphic comment manage buttons
Merge branch 'feature/polymorphic-comments' of github.com:mandelbro/ROR2014-portfolio