Quiet Hours: allow disabling of system sounds (2 of 2)

* this includes touch and lockscreen sounds

Change-Id: Ib703beefbadcae225e892936e1fc9f87415703af

Conflicts:
	res/values/cm_strings.xml
	res/xml/quiet_hours_settings.xml
Remove eight lockscreen targets/cleanup

Implement cm style lockscreen shortcuts (credit cm)
Move halo size option/add summary
Readd shortcut target helper/fix derps