Remove AppBar

This reverts commit 8749c8a04dc508cf1ba4d5d2a4d90f94e0b6383b.

Conflicts:
	res/values/cm_arrays.xml
	res/values/cm_strings.xml
	res/xml/interface_app_sidebar.xml
	res/xml/system_settings.xml

Change-Id: I0da16ff1046577e50d45815c7d38970e40c1ffc0