'layoutWidget' isn't a valid widget
reported in both 4.5 and 4.1
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@30787 a592a061-630c-0410-9148-cb99ea01b6c8
somewhat better layout; ideally, the whole dialog should be laid out in a grid,
but then qt insists on drawing the listwidgets much wider than the need to be.
The drawback of this approach is that the dialog cannot really be resized.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17949 a592a061-630c-0410-9148-cb99ea01b6c8
