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 2588811ef2)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

koha-tmpl/intranet-tmpl/lib/jquery/plugins/jquery.fixFloat.js

@@ -28,7 +28,7 @@
                     "visibility": "hidden"
             });
             tbhBis.width(tbh.outerWidth(true));
-            tbhBis.height(tbh.outerHeight(true));
+            tbhBis.height(tbh.innerHeight(true));
             tbhBis.attr('id', tbh.attr('id')+'Bis'); // Avoid 2 elts with the same id
             tbh.after(tbhBis);
             tbh.width(tbh.width());