private void Refresh_click(object sender, RoutedEventArgs e)
        {
            Mouse.OverrideCursor = Cursors.Wait;
            var settings = settingsService.GetSettings();

            settingsService.CleatAuthInformation();

            var authCookie = barboraService.Login(settings.Username, settings.Password);

            settingsService.UpdateAuthInformation(settings.Username, settings.Password, authCookie);

            Mouse.OverrideCursor = Cursors.Arrow;
        }