Add system app remover

credits to fronti90, SlimRom

Change-Id: Id043c16864616f8c0f4fe53011ceba5ab9af5d5d

Conflicts:
	AndroidManifest.xml
	res/drawable-hdpi/ic_menu_save.png
	res/drawable-mdpi/ic_menu_save.png
	res/drawable-xhdpi/ic_menu_save.png
	res/values/cm_arrays.xml
	res/values/cm_strings.xml