Active Display : respect Quiet Hours settings.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/policy/activedisplay/ActiveDisplayView.java
Active Display: Add threshold to proximity sensor

Display will only be activated if the proximity sensor is covered for 5 seconds or more.
Active Display : Don't show if it is an incoming call
Active Display : turn off display it is pocketed again