Quick Settings: Use scaled font size (1/2)

Set the font size for quick settings tiles to match the design docs
for 'Text size micro'.

Change-Id: I83e8f7eae65d5f40dd7aeb2b663bc1fc3d5324d2
Fix empty page being activated if music controls are disabled and music
is playing.

Change-Id: I76e00e4c58dc86ce0bf4e88c0e6be551950b6969
Fix brightness dialog layout.

This reverts part of change I83e8f7eae65d5f40dd7aeb2b663bc1fc3d5324d2.

Change-Id: I1f685357776dcac9c93e592e274acdf0497f4161