+ implement alternative zooming for Inventor style

+ proper handling of space navigator events
+ fix bug when assigning user-defined shortcuts

git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5369 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d

src/Gui/Application.cpp

@@ -1437,7 +1437,8 @@ public:
                 (int)event->type());
         }
         try {
-            if (event->type() == Spaceball::ButtonEvent::ButtonEventType || Spaceball::MotionEvent::MotionEventType)
+            if (event->type() == Spaceball::ButtonEvent::ButtonEventType || 
+                event->type() == Spaceball::MotionEvent::MotionEventType)
                 return processSpaceballEvent(receiver, event);
             else
                 return QApplication::notify(receiver, event);