Unresizable control screen.

racevisionGame/src/main/java/visualiser/Controllers/TitleController.java

@@ -95,6 +95,7 @@ public class TitleController extends Controller {
             layout = loader.load();
             Scene scene = new Scene(layout);
             Stage popupStage = new Stage();
+            popupStage.setResizable(false);
             popupStage.setTitle("Game Controls");
             popupStage.initModality(Modality.WINDOW_MODAL);
             popupStage.setScene(scene);