title: Generating paper-tab using a template not working in IE
body: <p>The following code works fine in Chrome and Firefox but in IE I have to click a tab twice to get the tab to change or respond to the click.  I'm thinking it may have something to do with creating paper-tabs in the template.  Is there a workaround to get this to function correctly in IE? I'm running 0.51.</p>
  
  <pre><code>&lt;paper-tabs id="papertabs" selected="{{selected}}"&gt;
  
    &lt;paper-tab name="all"&gt;All&lt;/paper-tab&gt;
  
     &lt;template id="papertabstemplate" repeat="{{cat in categories}}"&gt;
          &lt;template if="{{ cat.group == group }}"&gt;
              &lt;paper-tab name="{{cat.category}}"&gt;{{cat.category}}&lt;/paper-tab&gt;
          &lt;/template&gt;
     &lt;/template&gt;
  
  &lt;/paper-tabs&gt;
  </code></pre>