Added new badges
Switched to define() for constant definitions and updated all calls to constants.
Refactored newsfeed to be object-oriented and moved User.class.php to classes/ directory.
Fixed errors thrown by constructors to reflect the current parameters.
Replaced undefined $TIME variable with $time.
Added message capability to the newsfeed.  Need to discuss with Matt how to format/delineate messages from other events.  Also restructured the comment.php file to take variables instead of a comment string.  I have no idea why I did not do that in the first place...
Message comments now work and the points and badges comments are refactored to use OO stuff rather than the printing methods found in functions.php.
Wrapped up CAS branch