title: Empty message in gridPanel
body: <p>I'm using Extjs gridPanel to display data. I want to show "No data..." message in gridPanel  when no data available. How to do this ?.</p>
  
  <p>I tried emptyText property but its not worked.</p>
  
  <p>I think emptyText is for gridView not for gridPanel.</p>
  
  <p>Please help me how to show empty data message in gridPanel.(I'm using gridPanel not grid View) </p>