code cleanup

Change-Id: I7af612c13aff48d0d20a0e8f83ea43c8941dcaaf
Bug Fixes

 * HALO landscape orientation freeze
 * Animation clean up (remove number batch when clearing HALO)
Ping on unlock changes

 * Stop message flip animation on unlock
 * Prevent ping spam on unlock -
    - Ping ONLY if NEW notification received while device is locked/screen is off
      (If a notification pinged HALO once but was ignored, it will not ping again unless updated)