quick camera 2/2

Longpress power key to open power menu dialog then longpress power key again to
open the default camera app. Disabled on the lockscreen and if the device does
not have a camera.

-VanirAOSP

Change-Id: I03d214e64b1abdeb9fdd2f196b126a50dee01e18
PS2: update strings for orientation
PS3: remove orientation until forced landscape apps like netflix can override quick cam
Signed-off-by: DHOMD <DHO@dho.im>