Fixes Panel not being painted on start

src/main/java/de/tu_darmstadt/tk/SmartHomeNetworkSim/view/VisualisationPanel.java

@@ -81,6 +81,9 @@ public class VisualisationPanel extends JPanel implements Observer {
 			public void componentHidden(ComponentEvent e) {
 			}
 		});
+		control.setDimension(getWidth(), getHeight(), model.getDepth(),
+				true);
+		repaint();
 	}
 
 	@Override