[1/2] Base: Lockscreen Notification

Change-Id: I342b9fa6266c4c64f04121a8a2938de6532082b4

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
	packages/Keyguard/src/com/android/keyguard/KeyguardViewMediator.java
	packages/SystemUI/res/values/strings.xml