[2/2] Settings: implement App circle sidebar

-Support for Configurable Trigger Region[2/2] thanks to @zeetherocker

Conflicts:
	res/values/slim_strings.xml
	res/xml/recents_panel_settings.xml
	src/com/android/settings/mahdi/RecentsPanelSettings.java

Change-Id: Idcdf1b5f47a471b89e0029eb89c9b1f81f47d54b
add drawables for headsup

Change-Id: Icb09c0c40f8a646e215b7a4f7e29fb87dd08185e