Settings: Lockscreen Shake Security && Timer (2/2)

Shake to temporarily enable security.
	On successful unlock, disable security

PS2: Derp
PS3: Merge timer setting:
	Secure lock will auto-engage after
		X minutes
	Disable if device admin requires
		security
PS4: User must now verify their current
	security method before the setting
	is enabled here.
PS5: Fix targets now showing up on insecure
	lockscreens.

Change-Id: I44c2b1ab841b2a6f0d7f637da837806ce4a9d03c