title: Kendo Grid Sort Broken with Custom Editor
body: <p>My example demonstrates that the official kendo demo with a custom inline editor cannot be sorted by the custom editor column (Category): <a href="http://dojo.telerik.com/agoBi/2" rel="nofollow noreferrer">http://dojo.telerik.com/agoBi/2</a></p>
  
  <p>This is the original kendo example (without sorting enabled):</p>
  
  <p><a href="http://demos.telerik.com/kendo-ui/grid/editing-custom" rel="nofollow noreferrer">http://demos.telerik.com/kendo-ui/grid/editing-custom</a></p>
  
  <p>...to it, I added following code to be able to sort the grid (see my example at top):</p>
  
  <pre><code>sortable: true
  </code></pre>
  
  <p>The statement above is officially supported by Kendo and works on any other (normal) columns.</p>
  
  <p>Does anyone know how to add this functionality whilst retaining the custom editor column?</p>