volume rocker: volume adjust sound preference

Conflicts:
	res/values/ras_strings.xml
	res/xml/system_settings.xml
volume rocker: allow volumes to be unlinked. make the volume overlay more functional

Conflicts:
	res/values/ras_strings.xml
volume rocker: control cursor in text field using volume keys

Conflicts:
	res/values/ras_arrays.xml
	res/values/ras_strings.xml
volume rocker: wake. music control

Conflicts:
	res/values/ras_strings.xml