title: w2ui special character in popup is html coded
body: <p>In my w2ui form, specifically the multiselect pop-up element, I have several options which contain ampersands (<code>&amp;</code>).  In the box itself, it shows correctly, but when w2ui renders the pop-up selection box, it shows them html coded as (<code>&amp;amp;</code>).  Is there an easy work around to correct this so it shows up as (<code>&amp;</code>) in the popup menu as well?</p>
  
  <p>Edit:  here is a breakdown of the script in use.</p>
  
  <p>`</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
      &lt;link rel="stylesheet" type="text/css" href="http://w2ui.com/src/w2ui-1.4.2.min.css" /&gt;
      &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"&gt;&lt;/script&gt;    
      &lt;script type="text/javascript" src="http://w2ui.com/src/w2ui-1.4.2.min.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  
  &lt;input id="enum"&gt;
  
  
  &lt;script type="text/javascript"&gt;
      var assetList = ['ABIL DS&amp;O 845','ADSO012001','ADSO012002'];
      $('#enum').w2field('enum', { 
          items: assetList
      });
  &lt;/script&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>`</p>