Quick Settings : Fix Sound tile

This commit removes the deprecated VIBRATE related code and uses
the proper 4.x api/settings to toggle the ringer states.  It also
now shows the proper state on reboot.

Patchset 2 : Remove deprecated (non functioning) VIBRATE_IN_SILENT

Change-Id: Iec3e59e79c7ed686f8ff33f9cfdeb892ff70b151