title: JQGrid is not Showing "Loading" Message on Column Sort
body: <p>My JQGrid will not show the default "Loading" message when I am performing a column sort. I added the default code explicitly just to be safe:</p>
  
  <p>loadui: 'enable'</p>
  
  <p>but it still does not show the "Loading" message in the middle of the grid. What am I missing? Thank you.</p>