Merge 160302 - Extensions Docs Server: Show properties of properties in the table of contents

chrome/common/extensions/docs/templates/private/sample_item.html

 <div class="sample" tags="{{#api_calls}}{{name}} {{/}}">
-  <a name="{{id}}"></a>
   <img class="icon" src="{{icon}}">
-  <h2><a href="{{download_url}}">{{name}}</a></h2>
+  <h2 id="{{id}}"><a href="{{download_url}}">{{name}}</a></h2>
   {{?description}}
   {{description}}
   {{/description}}
   <div>
     <span class="label">Calls:</span>
     <ul>
       {{#api_calls}}
       <li><code><a href="{{link}}">{{name}}</a></code></li>
       {{/}}
     </ul>
   </div>
   <div>
     <span class="label">Source Files:</span>
     <ul>
       {{#files}}
       <li><code><a href="{{url}}/{{@}}">{{@}}</a></code></li>
       {{/}}
     </ul>
   </div>
 </div>