title: datepicker not populating the picker div
body: <p>So i'm working with a template that was bought for admin area, however in the sample it appears, where as in my version it doesn't.</p>
  
  <p>It adds</p>
  
  <pre><code>&lt;div id="ui-datepicker-div" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all ui-helper-hidden-accessible"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>However nothing else is in there, the ready state gets loaded, unique ID added but nothing else. </p>
  
  <p>I have both jQuery and jQuery UI included via the CDN, any obvious things I'm missing why the div gets created but not populated? </p>
  
  <p>jQuery</p>
  
  <pre><code>$(function() {
      $( ".datepicker" ).datepicker();
  });
  </code></pre>
  
  <p>UI field</p>
  
  <pre><code>&lt;input type="text" class="simple_field pick_date hasDatepicker" /&gt;
  </code></pre>