settings: add RAM Bar to Recents

Conflicts:
	res/values/strings.xml
	res/xml/system_settings.xml

Change-Id: Ic4882e67a20f342bb155673b73f6e8ba0f4b5916

Conflicts:
	res/values/strings.xml
	res/xml/system_settings.xml
	src/com/android/settings/cyanogenmod/SystemSettings.java