Toggle Last App: move toggle last app method to a separate class in com/android/internal/util/crdroid/TaskUtils.java

- Use the modified class from OmniRom

Change-Id: Iec1aa13aa5fbbc53b4d166e6fe3b10b3f1ef9dca

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
small cleanup on a commit

Change-Id: Ie6e2eaaea3440e24e666fce2596e1bda5ffc15da