Last App Toggle [1/2]

Signed-off-by: Zaphod <mwilson@acesappraisal.com>

Change-Id: I05762c15b69bd432f539683997c234f5802d8820

Conflicts:
	res/values/strings.xml
	src/com/android/settings/aoip/NavRingTargets.java
	src/com/android/settings/aoip/NavbarButtonSettings.java