title: how to add a controller event to href in grid in extjs mvc
body: <p>In my extjs grid 'cutterGrid' i have a renderer that has the following output</p>
  
  <pre><code>&lt;a href="#" class="myclass"&gt;Product 1&lt;/a&gt;
  </code></pre>
  
  <p>on my controller i have the following</p>
  
  <pre><code>    '#cutterGrid':{
          cellclick :this.onCutterSelectRow
      },
  </code></pre>
  
  <p>This works but, obviously this enables click on the whole row. I just  want this on a particular cell. </p>
  
  <p>Here is the field in  my grid</p>
  
  <pre><code> {
                              xtype:'gridcolumn',
                              dataIndex:'CutterNumber',
                              text:'Cutter',
                              renderer: renderCutter,
                              flex:1,
                              sortable: true
                          },
  </code></pre>