LastApp Toggle [2/2]

Provides option for new LastApp Action in frameworks.
Can be used as NavBar or NavRing.

PS2 : Add icons by Hoolm.
PS3 : Remove unnecessary dependency

Signed-off-by: Zaphod <mwilson@acesappraisal.com>
Change-Id: Icda3a83f6cd8378f57043678c4535dcb8f245eec
fix fc if the navbar icon is null

Patch Set 2: Added an icon to return if the old one is null

Change-Id: I4ff60e6da624f482518fb065227bd356dd97d5f1