Remove visual noise from vcl

Conflicts:
	vcl/source/app/settings.cxx
	vcl/source/window/dockmgr.cxx
	vcl/source/window/dockwin.cxx
	vcl/source/window/floatwin.cxx
	vcl/source/window/toolbox2.cxx

Change-Id: Ie67681549a76e77064b09d4b5bf80fe4c6010341
Reviewed-on: https://gerrit.libreoffice.org/8339
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>