RaceController scene separating

- removed a lot of unecessary parameters
- simplified set up functions
- racecontroller works on its own now
- made all the scenes visible by default

#story[1261]

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

@@ -1,35 +0,0 @@
-package visualiser.Controllers;
-
-import javafx.fxml.FXML;
-import javafx.scene.control.Label;
-import javafx.scene.paint.Color;
-import javafx.scene.text.Text;
-import javafx.stage.Stage;
-
-/**
- * Controller for a popup notification regarding user activity.
- */
-public class NotificationController {
-    private @FXML Label lblDescription;
-    private @FXML Text txtMessage;
-
-    /**
-     * Closes the popup window once clicked.
-     */
-    public void ok(){
-        ((Stage)lblDescription.getScene().getWindow()).close();
-    }
-
-    /**
-     * Displays the appropriate popup notification.
-     * @param message message for the user
-     * @param warning if true warning text shown, if false success text shown
-     */
-    public void setMessage(String message, Boolean warning){
-        lblDescription.setText(message);
-        if (!warning){
-            txtMessage.setText("Success!");
-            txtMessage.setFill(Color.GREEN);
-        }
-    }
-}