Fix: Ensure lockscreen see through setting persists after reboot

If see through was enabled and the device was rebooted,
the user had to toggle the setting off and on again to activate.

This commit was Re-committed by @namja in Triangles

Change-Id: Ic743986d9b0abae138e2291864ce527c4f9ff864

Conflicts:
	src/com/android/settings/SecuritySettings.java