framework: Toggle insecure lockscreen bypass with keyboard/smart cover

Makes it possible to toggle the feature that bypasses the lockscreen when the
hardware keyboard is slid out/smart cover is opened and security mode is 'none'

Change-Id: I90e874fc978c8cdafd47582c8bc3a2be3fbcd89e

Conflicts:
	core/java/android/provider/Settings.java
Fix QS battery icon tile