Increasing Ringtone

Added setting for Increasing ringtone. The setting is located
together with ringtone and vibration in the sound menu.

Change-Id: I94932b0c74dc4b6bb20ff8a399eaf00f8fa5a4a3

Conflicts:
	src/com/android/settings/SoundSettings.java

Conflicts:
	src/com/android/settings/SoundSettings.java