RC: hardware rebinding additions

*kill app
*longpress back key

FW part: http://gerrit.aokp.co/#/c/15691/

Change-Id: I7956fd039009bcf4e84d299809066b012ac55d21
Signed-off-by: Jonathan Steadman <xxwhitehawk@gmail.com>

Conflicts:
	res/layout/fragment_hardware_keys.xml
	res/values/arrays_settings.xml
	res/values/strings.xml
	src/com/aokp/romcontrol/fragments/HardwareKeysFragment.java