title: Extjs tooltip for selected items of multiSelect combobox
body: <p>I have done tooltip for drop-down list items like this: </p>
  
  <pre><code>listConfig:   { 
                  itemTpl: '&lt;div data-qtip="{description}"&gt;{name}&lt;/div&gt;'
            };
  </code></pre>
  
  <p>and now I what tooltip for selected items , note that combobox is multiSelect, and I want to see proper tooltip of selected item on hover.</p>
  
  <p>I what tooltip for x-tagfield-item.</p>