/// <summary>
 /// Initializes and opens <see cref="MainWindow"/> and closes <see cref="HighscoreWindow"/>
 /// </summary>
 /// <param name="sender">Object containing information about sender object</param>
 /// <param name="args">Object containing arguments</param>
 private void BackToMenu_Click(object sender, RoutedEventArgs args)
 {
     var mainWindow = new MainWindow();
     mainWindow.Show();
     this.Hide();
 }
 /// <summary>
 /// Initializes a <see cref="MainWindow"/> window and opens it.
 /// Closes <see cref="EndScreenWindow"/>
 /// </summary>
 /// <param name="sender">Object containing information about sender object</param>
 /// <param name="args">Object containing arguments</param>
 private void OnMenuClick(object sender, RoutedEventArgs args)
 {
     var menu = new MainWindow();
     menu.Show();
     this.Close();
 }