title: Hide row in Extjs grid view not work
body: <p>I need to hide duplicate rows in master/detail grid. I found this fiddle <a href="http://jsfiddle.net/tPB8Z/1465/" rel="nofollow">http://jsfiddle.net/tPB8Z/1465/</a> that hides some cells based user choice, but when I applied this in my code <a href="http://jsfiddle.net/alebotello/axvhtrcL/21/" rel="nofollow">http://jsfiddle.net/alebotello/axvhtrcL/21/</a> method <code>addRowCls()</code> from view grid, it did not work for rows. Master and detail grids shared same store, and I only want to change rows visibility in master grid, without modify store or create a new one.</p>
  
  <p>In master grid listeners:</p>
  
  <pre><code>    afterrender: function (comp) {
              var st = comp.getStore();
              var arr = [];
              var i = 0;
              var view = comp.getView();
              st.each(function (record) {
  //                console.log(record);
                  if (arr.indexOf(record.data['idOrden']) === -1) {
                      arr.push(record.data['idOrden']);
                  } else {
                      view.removeRowCls(record, 'x-grid-view');
                      view.addRowCls(record, 'oculto');
  //                    console.log(view);                    
                  }
                  i++;
              });
  </code></pre>
  
  <p>css</p>
  
  <pre><code>.oculto{
      display: none;
  }
  </code></pre>