Editor IO exception handling (#1491)

* Close input stream
Show MessageBox with exception message
Remove unused arguments
Guard all of the Editor input/output code parts and show MessageBox
with appropriate message and issue reporting link

* Extract showing messageBox into method

src/modules/fancyzones/editor/FancyZonesEditor/MainWindow.xaml.cs

@@ -150,11 +150,11 @@ namespace FancyZonesEditor
             {
                 if (model is GridLayoutModel)
                 {
-                    model.Apply(mainEditor.GetZoneRects());
+                    model.Apply();
                 }
                 else
                 {
-                    model.Apply((model as CanvasLayoutModel).Zones.ToArray());
+                    model.Apply();
                 }
 
                 Close();