Revert "Revert "Facebook Sync Dirty Hack""

This reverts commit a2ec21683e900f17652040bc80f5091d8212e6b5.
Revert "Adding in CUSTOM_NOTIFICATION to contacts so that notification sounds can be assigned on a per contact basis rather than system wide."

This reverts commit 548543c0682fc691f68c9be983d41f774ea3025f.