SystemUI: unlock keyguard to open nav ring apps

Should not launch apps if it's secured with a pin/password/pattern.

Change-Id: I52fd604a15982e9eed465e005425b93ffb2a6e82
Signed-off-by: Roman Birg <romanbirg@gmail.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/SearchPanelView.java