* Clean up most line moderation functions (don't require, but allow an @ and trim if needed)
* Add a 'birthday' field to User model to track user-submitted birthdays
 * Various small bug fixes/quirks, mostly related to AFK tracking
* [Fixes #56] Add in basic support for SongResponses
* User: Rename 'last_wait_list_position' to 'waitlist_position'
* Refactoring of 'advance' and 'roomJoin' functions (since advance is emitted on room join automatically)