Update wallpaper app UI

Patch set 2: Code format fixes
Patch set 3: Change layout names and remove whitespace
Patch set 4: I'm blind
Patch set 5: Super blind
Patch set 6: Fix code style issues

Change-Id: I019dd3679288611ebe7cb326a536ffaaeba074a2
CMWallpapers : Auto-scale/crop wallpapers

Change-Id: Ic7517fe472df02dca8a3287f5d51d72544ccd95f
fix

Change-Id: Ib825004f824cb84714eea957c2bf5a5bdbc31a88
Signed-off-by: scott <scott@ubuntu>