camera short cut
Camera button support: make it actually work

Previous commits were merged so fast that I didn't even
added the code that actually DOES launch the camera.
Let me fix that.

Change-Id: I4fcb3c46e5fd50e273dcf19fd3eb35a3f9d979e0
FW: More custom button actions (1/2)

Power
Last app

Partially ported from Slim, so giving them autorship

Change-Id: Ie0e54ef1fcbf388d1b740850739152fbdb6708a2
RC: Add Torch as an button action (1/2)

Change-Id: Ie635792b944fa85dd3effb69403256469df20763
fixed build, thanks aicp for new hardware shortcuts