Cleanup desktop layout

PlayWall/src/main/java/de/tobias/playpad/layout/desktop/DesktopMainLayoutFactory.java

@@ -21,9 +21,9 @@ import java.util.Deque;
 public class DesktopMainLayoutFactory extends MainLayoutFactory {
 
 	private DesktopMenuToolbarViewController desktopMenuToolbarViewController;
-	private ObjectProperty<DesktopEditMode> editMode = new SimpleObjectProperty<>(DesktopEditMode.PLAY);
+	private final ObjectProperty<DesktopEditMode> editMode = new SimpleObjectProperty<>(DesktopEditMode.PLAY);
 
-	private Deque<IPadView> recyclingStack;
+	private final Deque<IPadView> recyclingStack;
 
 	public DesktopMainLayoutFactory(String type) {
 		super(type);

PlayWall/src/main/java/de/tobias/playpad/layout/desktop/DesktopMenuToolbarViewController.java

@@ -157,7 +157,7 @@ public class DesktopMenuToolbarViewController extends BasicMenuToolbarViewContro
 	private transient DesktopColorPickerView colorPickerView;
 	private transient PadRemoveMouseListener padRemoveMouseListener;
 
-	private DesktopMainLayoutFactory connect;
+	private final DesktopMainLayoutFactory connect;
 
 	DesktopMenuToolbarViewController(IMainViewController controller, DesktopMainLayoutFactory connect) {
 		super("Header", "view/main/desktop", Localization.getBundle());