Protected App [2/3] Protected Apps Settings -> Apps: - Added Receiver which can send in a call to PackageManager to toggle a components protected status. - Add Protected Apps activity (available from Apps fragment) - Reads from ApplicationInfo state - Requires Pattern Lock to view/modify protected apps - Updates Settings Secure DB with protected components - Support resetting protected apps pattern lock

Change-Id: If07a7b69ac963ffae855621881e1944fc8754782