Toggle: Volume Toggle

Based on CM's - https://github.com/CyanogenMod/android_frameworks_base/commit/d2b7a0e0b0c5a6fb350214858a9f2468fd3b9e60

Signed-off-by: Daniel <daxx4182@gmail.com>

Conflicts:
	packages/SystemUI/res/values/strings.xml
Update Volume Toggle icons