VolumePanel: Rework design on top of Hover

Signed-off-by: David L.-W. <xD_e-mail@gmx.de>

Change-Id: If16fefc8a0a4ef54d4874e0b378d23f252b0e660
Revert "VolumePanel: Rework design on top of Hover"

This reverts commit 5b987b3280b18f3cfc7d1d6104ab2f481c259b06.