Framework: Lockscreen Slider Logic && Fix

Part 1: Keyguard array points directly to
	unlock handle and unlock handle
	ONLY.  Assist/Camera intents will
	never be used. It seems this logic
	in the code was devalued %100 by
	an array change that we'll never
	take advantage of.  I assume this
	was done so OEMs can revert the
	array and get camera/assist
	slider targets with minimal effort.

Part 2: Fix unlock icon colorizing if user
	lock targets are null.

Change-Id: I58206829de03828c7a0b838a4bbc56dbbc33c0c9