Streamline Settings menu

Put PA fragments under Customization header and lowercase HALO

Change-Id: Ib4991295361fc693ec1989010ef163f46b7439ee

Conflicts:

	res/xml/settings_headers.xml
Safe Headset Volume (2 of 2)

Conflicts:

	res/values/pa_strings.xml
	res/xml/sound_settings.xml
	src/com/android/settings/SoundSettings.java
clean up