title: Ext-Js how to modify Combo box display for selection
body: <p>In my selection model items can be strings, integers or html data.
  Like "Testing", "1234" or "".</p>
  
  <p>When the item is in html , my selection model is rendering html, I am not sure how to avoid it. 
  <img src="https://i.stack.imgur.com/MC61C.png" alt=" Selected item "></p>
  
  <p><img src="https://i.stack.imgur.com/MbJYI.png" alt="Shown while selecting"></p>
  
  <p>THank you 
  PS: I am currently using EXT JS 3.4 </p>