Fix the issue that the top of fullscreen dialog is clipped away

The visibility of status bar comes from the top fullscreen window,
not from the focused window.
That has to be taken into account during the calculation of the
decor rect. You can use mTopIsFullscreen for this purpose.

Change-Id: I6159eb2ee389885cf5ab507157f9451841364d2f
QS: Make it possible to show smaller icons (1/2)

* Remove text and show more icons on one row

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java

Change-Id: Ie247aba1ae5fbdb8f5298e30fb2f04a985e73532