private void MenuSectionsListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            ListBox               lb       = (ListBox)sender;
            MenuCategory          category = (MenuCategory)lb.SelectedItem;
            NewMenuCategoryWindow window   = new NewMenuCategoryWindow(category);

            window.ShowDialog();
        }
        private void AddCategoryButton_Click(object sender, RoutedEventArgs e)
        {
            MenuCategory          menuCategory = new MenuCategory("");
            NewMenuCategoryWindow window       = new NewMenuCategoryWindow(menuCategory);

            window.ShowDialog();
            if (string.IsNullOrEmpty(menuCategory.EnglishName))
            {
                return;
            }
            MenuManager.MenuCategories.Add(menuCategory);
            currentCategory = menuCategory;
            NotifyPropertyChanged("CategoryItems");
        }