Added playlist section to rock party detail screen.
Added playlists to project
Fixed generator mistakes for playlists
Fixed data type issues in playlist migration.
Revert to f1b1f74bfe5
Added playlists to project
Style changes to playlist list screen
Added playlist songs to project.
Added playlist songs to playlist detail screen.
Added bootstrap styles to edit/create form for playlists
Added playlist songs to playlist create/edit form
Removed user textbox from create/edit playlist form.  Added functionality to auto-assign the user when creating a playlist
Added min values for number textboxes on playlist create/edit form
Added user parameter to attr_accessible in playlist model
Added rb-readline to development section of gemfile
Fixed song and playlist references in playlist_song model.
Changed playlist detail screen to show email address of user
Added before filter for authorization to playlist controller
Removed auto-generated spec tests for playlists
Changed playlist list to show user's email address.