SystemUI: show statusbar icon if quiet hours is active

Reflects the 3 active modes we provide as status bar icon, similar to
android L.

Change-Id: Ic32242b0843f44de72174ee768ef04ee0f4535aa
Signed-off-by: Dan Trifan <jimsth@gmail.com>
QS: Fix pressed color for quicksettings tiles

GestureDetectors inherently entail clickability implications. Because of this unfortunately the bastardized flip hybrid
ported from omni has broken our color settings and the click sound (which i temp fixed a while back).
Since there's no affordance of being able to flip to change settings when available, and since it's only
actually able to be done on about 3 tiles, lets just restore the previous flip code in favor of not breaking
shit and being more consistent.

Revert "Quicktiles: support flipping at every tile"
This reverts commit f0a9980c5c4989d55b46c578a98ddcd484946664.

Nuke edits:
  remove redundant lines from every tile's onClick, and remove a getter for tile flip enabled state
  clarify commit message and add the word of the day: "affordance"

Change-Id: I7b5770b6833b0e9eb42d1ae0ba85159ced2408fe