[1/2] Base: implement App circle sidebar

Change-Id: I08d2a3a7e0f8df20e801e585d4cac8547a740a3e

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/bk_styles.xml
	packages/SystemUI/res/values/custom_dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java