Add active display to ChameleonOS [1/2]

This is the ChameleonOS implementation of the active display feature,
similar to that found on the Moto X.

When enabled the screen will turn on and display the incoming
notification.  The user can then open the app for the notification,
dismiss the notification or unlock their device normally.

Additional notifications, if any exist, will be displayed below the ring
notification and can be viewed by touching the notification icon.  The
user can simply slide their finger across these other notification to
quickly view them.  The last one touched will remain in the ring and the
user can then perform any of the actions listed above.

PS2-PS12: All the changes that brought us to this current
implementation.

Change-Id: I51c17cec33b65dc60111a10c5ca2c449596ebe63

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/dimens.xml
	core/res/res/values/symbols.xml
	packages/SystemUI/AndroidManifest.xml
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/res/values/styles.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java