Don't close windows on ESC

[dekiesel]

Feature description
Windows don't close when I press ESC.

I'm a heavy VIM user. In Vim, to get out of edit mode, you press ESC.
After just having edited a long stored procedure I pressed ESC to get out of edit mode (habit) and lost all my changes.

Totally my fault, but it'd be great if you could turn this off in pgmodelers settings.

Alternatively it'd be great to get VIM mode in pgmodeler ;)

[rkhaotix]

Maybe I can add a confirmation message if the contents of the form were changed, avoiding this kind of loss. :)