[1/2] Base: implement App circle sidebar

add whitelist app to include into circle view
rebased
make standalone patch

PS.15 : rebased
PS.16 : cleanup

Change-Id: I08d2a3a7e0f8df20e801e585d4cac8547a740a3e

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
App Circle Sidebar: Support for Configurable Trigger Region[1/2]

Change-Id: Ib89a98e607f48108b1a1fb54f00335a3bc4ff2e7