framework: add RAM Bar to Recents

Conflicts:

	core/java/android/provider/Settings.java

Change-Id: If1f3026404b6e77e8e8700bc0d3b4d65a2b0be97

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java