Removes shiny edges, flat design ftw
Allows the published field to be submitted in the posts form
Adds the published field to the posts form for editors
Customizes the posts index page
Refactors posts show page, adds 'unpublished' view
Fixes issues with username field in devise user model
Adds fixes for post fixtures
Adds tests for creating a post
Updates test for deleting a post
Adds fixtures for author and editor
Updates sign_in method to allow specified roles
Adds migrations for adding role to users
Adds migration for adding published status to posts