title: Get sibling categories in category.tpl for the current category in prestashop
body: <p>I need to list <strong>sibling categories</strong> in the category page in a Prestashop theme. Currently  it <strong>does</strong> show the sub-categories if any but <strong>not</strong> the sibling categories.</p>
  
  <p>A quick answer would really be appreciated! Thanks.</p>