Get rid of the attributed label class. It is not used and is no longer needed (iOS 6 adds this functionality)

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Use systemFontOfSize and boldSystemFontOfSize instead of using fixed fonts

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Dead code removal.
Reorganize some of the classes in the 'Common' group.
Change UITextAlignment and UILineBreak types to their NS* variants
Add the new background color to our UIColor category
When setting the new background color, use the new method in the UIColor category (and add it where needed to fix some transparent backgrounds).