Bug 21139: Floating toolbars - Remove unecessary height

Bug 21139: Floating toolbars - Remove unecessary height

This patch remove some pixels under the toolbar, they were used by the
hidden element.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 2588811ef249f0996527e952e4ef5307c1834a71)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 3d0d2a35585b6563148178d41545db09dcc8c007)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>