title: Datatable sorting but group rows
body: <p>I want to enable sorting but group multiples row into one in the same time. So that they will always sorted by in groups. Like row of group 1 will stick with group 1 and so on.. </p>
  
  <p><a href="http://live.datatables.net/wuwaxiqe/1/edit" rel="nofollow">http://live.datatables.net/wuwaxiqe/1/edit</a></p>