[Development] Move QAction from QtWidgets to QtGui

[Davide Bettio]

Hello,

I've noticed that QAction hasn't been moved from QtWidgets module to  
QtGui module, it would be really good if also that module gets moved  
there.
QAction require QWidget for few things but I think that it is possible  
to solve this problem easily.

If you give me some input on this topic I might work on a patch.

Bye,
Davide Bettio.