title: ExtJS6 - Change Grid Column Default Sort Direction from ASC to DESC
body: <p>I have a grid linked to a remote store with a remote sorting enabled. </p>
  
  <p>When I click on the grid's header for the first time it sets the column order to be ascending, then descending on the second click. </p>
  
  <p>Is there a way to make the first click to go into the descending order for certain columns?</p>