added restart and closing button after winning

src/main/java/Gui/GameGui.java

@@ -17,7 +17,7 @@ public class GameGui implements GameGuiInterface {
 
 public static JPanel MainPanel, ButtonPanel, headingPanel, WinningPanel, LosingPanel;
 public static JLabel Headline,QuestionLabel,WinningLabel, LosingLabel;
-public static JButton AnswersBtn1,AnswersBtn2,AnswersBtn3,AnswersBtn4,RestartBtn,ClosingBtn;
+public static JButton AnswersBtn1,AnswersBtn2,AnswersBtn3,AnswersBtn4,RestartBtn,RestartBtn1,ClosingBtn;
 public static int questionNr = 0;
 GridLayout grid;
 GridBagConstraints gbc;
@@ -76,14 +76,20 @@ GridBagConstraints gbc;
 	public void createWinningPanel() {
 		GameGui.MainPanel.setVisible(false);
 		GameGui.ButtonPanel.setVisible(false);
+		
+		RestartBtn1 = new JButton("Nochmal Spielen");
+		ClosingBtn = new JButton("Schliessen");
+		
 		WinningPanel = new JPanel(new GridLayout());
 		WinningLabel = new JLabel("Du hast Gewonnen!");
 		WinningLabel.setVerticalAlignment(JLabel.CENTER);
 		WinningLabel.setHorizontalAlignment(JLabel.CENTER);
 		WinningLabel.setFont(new Font("Serif", Font.BOLD, 28));
+		
 		WinningPanel.add(WinningLabel);
+		WinningPanel.add(RestartBtn1);
+		WinningPanel.add(ClosingBtn);
         gui.Frame.add(WinningPanel);
-        WinningPanel.setVisible(true);
 	}
 
 	@Override