title: Duplicate a row in a specific position
body: <p>With a grid, I want to duplicate a row selected.</p>
  
  <p>Then I want to insert a copy of the row in the grid position immediately following the row selected.</p>
  
  <p>FIDDLE: <a href="https://fiddle.sencha.com/#fiddle/1hc6" rel="nofollow">https://fiddle.sencha.com/#fiddle/1hc6</a></p>
  
  <pre><code>var grid = this.up('grid');
  var record = grid.getSelectionModel().getSelection()[0].copy(null);
  
  var store = grid.getStore();
  var row = store.indexOf(record);
  
  store.insert(row, record); //store.insert(row + 1, record);?????
  </code></pre>
  
  <p><strong>I EDITED fiddle with solution</strong></p>