############# BUGS #############

The custom menu editor crashes pretty often. It looks like a GTK bug since
nobody managed to find the bug or to fix the editor. Experimental code, use on
own risk!

If a main menu entry in the custom menu editor is deleted, it doesn't delete the
file (so it is still there). The same problem with renaming a main entry.

If you try to view_in_netscape and current_document->filename == NULL then
it gives a shell error. I haven't bothered fixing this because I didn't
know how best to fix it, I think just popping up a dialog saying "Please
save the file" would be best? 
[what about an auto-save to a temp file? -chris]
[as long as you check _very_carefully_ that the temp file doesn't 
exist yet.. -olivier]
