title: Ext JS EditorGridPanel not editable
body: <p>I'm trying to modify this example: <a href="http://www.extjs.com/deploy/dev/examples/writer/writer.html" rel="nofollow noreferrer">http://www.extjs.com/deploy/dev/examples/writer/writer.html</a> to make the all fields in the grid editable (currently only the one field is).</p>
  
  <p>I've tried commenting out these lines in UserGrid.js (lines 118-120) as such:</p>
  
  <pre><code>//this.stopEditing();
  this.store.insert(0, u);
  //this.startEditing(0, 1);
  </code></pre>
  
  <p>But that only changes the field you can edit to the first one you try to edit.</p>
  
  <p>How do I make the entire grid editable?</p>