Settings: Quiet Hours Automatic Switch (2/2)

Given that we have settings that may be useful
	for any time the phone is set to silent
	(automatic reponse/bypass especially):
	enable an automatic switch method

Change-Id: I6abeb6f1716ed230fdb11b426a915acb08c3122b

Conflicts:
	src/com/android/settings/slim/QuietHours.java