[1/2] Base: Lockscreen Notifications

OmniGears: https://gerrit.omnirom.org/#/c/6062/

Thanks to schubi for dynamic width control

Change-Id: Ifba54d3b8e3035e3cacedcb60c2691e325326e05

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/statusbar/IStatusBar.aidl
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java
	packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarTransitions.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java