Added uglyfier gem.
Added message validation.
Added screen_name validation.
Removed haml-rails from within dev group.
Removed ability for user to follow themselves.
Devise style changes.
Changed devise signup page.
Added uniqueness of screen_name
Redirect on failed post.
Added better alerts and notices.
Added better user validators, esp. screen_name
Better login experience.
Added ignore.
Styled navigation into tabs.