Revert "App sidebar [1/2]"

This reverts commit 0a0fb60eeed33aec97535d011b15577db5f924e5.

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/cm_strings.xml

Change-Id: I33e70ce98ed38e217bdfc5eafb0f45ca1be81d62