Set vibration toggle as gone if vibration not available

The "vibrate" and "increasing volume" options are displayed on the same
row with the vibrate setting first. Setting a view as invisible makes
its contents invisible but still occupies the view's space. Using gone
doesn't.

Change-Id: Ia57141c3ce48f3f6e7f081e83e30f7d8905977d9
Merge "Set vibration toggle as gone if vibration not available" into cm-10.1