title: Devbridge AutoComplete with Ajax doesn't fill suggestions
body: <p>I have a autocomplete field which triggers a server search on fullname in a db with a JSON response.</p>
  
  <p>It is working fine when I use a local array but when I use the JSON server response then the suggestion list is not updated even though the response seems correct in the Network console (to my knowledge).</p>
  
  <p>I have no error in my console and it is not a CSS issue because when I inspect the code, the suggestion div is empty.</p>
  
  <p>Here is my html input field:</p>
  
  <pre><code>&lt;input type="text" id="form_fullname" name="form[fullname]" required="required" class="contact-select form-control" autocomplete="off" data-cip-id="form_fullname"&gt;
  </code></pre>
  
  <p>Here is the autocomplete-suggestions div:</p>
  
  <pre><code>&lt;div class="autocomplete-suggestions" style="position: absolute; display: none; max-height: 300px; z-index: 9999;"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>Here is my js:</p>
  
  <pre><code>$('.contact-select').autocomplete({
      serviceUrl: 'contacts/search/fullname/',
      minChars: 3,
      deferRequestBy: 200
  })
  </code></pre>
  
  <p>And here is a JSON response (validated on JSONLint):</p>
  
  <pre><code>{"query":"vial-","suggestions":["VIAL-COLLET, Bastien"]}
  </code></pre>