App: fix property ordering problem when undo/redo (#3255)

* Part: fix Placement/Shape onChanged() handling

* App: fix property ordering problem when undo/redo
See https://tracker.freecadweb.org/view.php?id=4265#c14271

* Gui: fix undo/redo signaling
Make sure to signal after all properties has been restored

src/Gui/ViewProviderDocumentObject.cpp

@@ -701,3 +701,7 @@ std::string ViewProviderDocumentObject::getFullName() const {
         return pcObject->getFullName() + ".ViewObject";
     return std::string("?");
 }
+
+App::Document *ViewProviderDocumentObject::getOwnerDocument() const {
+    return pcObject?pcObject->getDocument():0;
+}