title: How to show sub-categories in the Categories list
body: <p>How can I show sub-categories right in the Categories list, e.g.:</p>
  
  <p>Root Category #1</p>
  
  <ul>
  <li>Sub Category #1</li>
  <li>Sub Category #2</li>
  <li>Sub Category #3</li>
  </ul>
  
  <p>Root Category #2</p>
  
  <ul>
  <li>Sub Category #4</li>
  <li>Sub Category #5</li>
  <li>Sub Category #6</li>
  </ul>
  
  <p>Nopcommerse v2.60</p>