VolumePanel: always show expanded menu button.

Signed-off-by: KhasMek <Boushh@gmail.com>
VolumePanel: rewrite for TV layout

  The volume panel now appears at the bottom
  of the screen for a less intrusive experience.
  If the panel is asked to expand, it pulls up
  from the bottom of the screen. When it times
  out, the volume panel will drop down out of the
  display.

Signed-off-by: KhasMek <Boushh@gmail.com>