Quit on Mac

[ghutchis]

The quit command on Mac is inconsistent. If you quit via the dock, windows will be requested to save (via closeEvent).

If you quite from the toolbar or menu, no closeEvent is sent.

I think this may be a Trolltech bug, but will post to qt-interest to check.

This bug in Avogadro is a reminder to fix our behavior.

Reported by: @ghutchis

[ghutchis]

Logged In: YES
user_id=21420
Originator: YES

This is essentially a duplicate of bug #1723768.

For "quit" we need to send a close event to each window:
http://doc.trolltech.com/qq/qq18-macfeatures.html

Original comment by: @ghutchis