Keyguard: disable music transport control debug

Change-Id: Ia4361d0850334dc0944559c40409c9062cf02e47
SystemUI: Navigation Bar: Rotate the search light in landscape

The current search light icon is an arrow pointing upwards, so
while in portrait it points to the direction to be swiped to access
Google Now (and the customizable shortcuts), in landscape it points
upward as well which looks out of place, and swiping upwards reveals
that you have to swipe towards the left to access those targets.
Rotate it by 270 degrees to make it point towards the right direction
(i.e. Towards the lockscreen widgets)

Change-Id: I19670fdb1f5ab7814c05264330cb8097a206639a
[1/2] Forward port power connect/disconnect notification support

Original commit info:

    [1/2] Power connect/disconnect notification support

    part 1/2: frameworks/base PowerUI and Settings
    http://review.cyanogenmod.org/#/c/35241/

    part 2/2: packages/apps/Settings Sound settings
    http://review.cyanogenmod.org/#/c/35242/

    Change-Id: I36a6b9f924d2cd52191a8e83a744745b37c5b068

Change-Id: Ib865e1c296cb8e1d957b2a48616c88ceaba5c008