Use 'dismissAllTasks' to clear all apps
make switch to last app animation snappier

Change-Id: Ia253a3db45109da7dd4f7a2467184d81c04918b4
Framework: add Settings.System boolean helper methods

Conflicts:
	core/java/android/provider/Settings.java
Framework: Add enabler for Navbar Recents

Conflicts:
	core/java/android/provider/Settings.java
Forward port battery icon options [1/2]

Bring forward the various battery icon options.
Portrait, Landscape, Circle, Text.

Still retains new options for where to display battery percentage text.

Change-Id: Icfc14d989eebde9014538291c24aa76d328df234

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardStatusBarView.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java