Frameworks: Keyguard - Add user configurable shortcuts

Change-Id: If9bbf63067ce2294a09b1f8f70006adff035604d
Signed-off-by: scott <scott@ubuntu>
Signed-off-by: jaysurp <jaysurp031@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	packages/Keyguard/res/values/dimens.xml

Conflicts:
	core/java/com/android/internal/util/slim/ActionHelper.java