[Usability]file menu

[Sunnanvind Fenderson <sunnanvind fenderson com>]

I currently use three gnome apps - nautilus, galeon, and
gnome-terminal - more often than the others, and I noticed that the
"file" menu in some of them have nothing to do with files, it's all
about "new window" and "new tab".

This is quirky.

Maybe it should be called "main" or "windows", and "edit" in terminal
should be called "settings" like the settings menu in galeon.