Settings: Safe headset volume override legal waiver

Patch set 1  : Initial commit
Patch set 2  : Remove alert icon (per Design guidelines)
Patch set 3  : Fix per Danesh's comment

Change-Id: Ic6b9ba2620de6efb327416e8955c3a2c08af043b
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_packages_apps_Settings into cm-10.1