Settings: Option to disable Heads up in lockscreen (2/2)

This disables heads up notifications from showing
on the lock screen while using wake on notification

Change-Id: I89bbbb439e330921d5f517e01b586fc284ef33a6

Conflicts:
	res/values/liquid_strings.xml
	src/com/android/settings/cyanogenmod/LockscreenNotifications.java
Slim Recents: Option to show topmost task [2/2]

Credits to Der-Schubi
Settings: Slimrecents background color && transparency [1/2]

Allow user to specify background color and transparency level for the slimrecents panel.