/* SUBMENU */
private void TeamEdit_Click(object sender, RoutedEventArgs e)
{
CollapseAllGrids();
TeamEditGrid.Visibility = Visibility.Visible;
Team team = CurrentTournament.FindTeam((string)((Button)sender).Tag);
Edit_TeamName.Text = team.Name;
PlayersListView.ItemsSource = team.listPlayers;
PlayerCreateButton.Tag = team.Name;
TeamEditButton.Tag = team.Name;
}