Settings: port vol rocker wake

framework changes already present

Change-Id: I481c62fe573834681ac212ac9d91e5b8c941c3bc

Conflicts:
	res/values/config.xml
	res/values/strings.xml
	src/com/android/settings/DisplaySettings.java

 Author:    DvTonder <david.vantonder@gmail.com>
 On branch jb-4.2
 Changes to be committed:
	modified:   res/values/config.xml
	modified:   res/values/strings.xml
	modified:   res/xml/display_settings.xml
	modified:   src/com/android/settings/DisplaySettings.java