Volume controls from CyanogenMod thanks guys! Volume overlay, volume rocker key sounds, and notification volume link to ringer

Summary: Change-Id: If03766a416d7f3d5292eeec180c98a083b2df7d9

Test Plan: cp to verify but it's solid

Reviewers: Mustaavalkosta, michyprima, rlasalle15, randall.rushing, synergy

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D226