Extension docs server: tweak CSS to make it look much more like the current

chrome/common/extensions/docs/server2/templates/private/sidenav.html

 <div class="g-unit g-first" id="gc-toc">
   <ul>
-    <div>
+    <li>
       <input type="search" id="api_search" results placeholder="Search APIs">
       <div id="filtered_apis"></div>
-    </div>
+    </li>
     <li><h2>Starting</h2>
       <ul>
         <li><a href="getstarted.html">Getting Started</a></li>
         <li><a href="overview.html">Overview</a></li>
         <li><a href="whats_new.html">What's New?</a></li>
       </ul>
     </li>
     <li><h2>The API</h2>
       <ul>
         <li><a href="devguide.html">Developer's Guide</a>
@@ skipping 33 matching lines @@
           </ul>
         </li>
         <li><span>Finishing</span>
           <ul style="display: none;">
             <li><a href="hosting.html">Hosting</a></li>
             <li><a href="external_extensions.html">Other Deployment Options</a></li>
           </ul>
         </li>
       </ul>
     </li>
-    <li><h2><a href="apps.html">Packaged Apps</a></h2></li>
     <li><h2><a href="tutorials.html">Tutorials</a></h2>
       <ul>
         <li><a href="tut_debugging.html">Debugging</a></li>
         <li><a href="tut_analytics.html">Google Analytics</a></li>
         <li><a href="tut_oauth.html">OAuth</a></li>
       </ul>
     </li>
     <li><h2>Reference</h2>
       <ul>
         <li><span>Formats</span>
           <ul style="display: none;">
             <li><a href="manifest.html">Manifest Files</a></li>
             <li><a href="match_patterns.html">Match Patterns</a></li>
           </ul>
         </li>
         <li><a href="permission_warnings.html">Permission Warnings</a></li>
         <li><a href="api_index.html">chrome.* APIs</a></li>
         <li><a href="api_other.html">Other APIs</a></li>
       </ul>
     </li>
-    <li><h2><a href="samples.html">Samples</a></h2></li>
     <li><h2>More</h2>
       <ul>
         <li><a href="http://code.google.com/chrome/webstore/docs/index.html">Chrome Web Store</a></li>
         <li><a href="http://code.google.com/chrome/apps/docs/developers_guide.html">Hosted Apps</a></li>
         <li><a href="themes.html">Themes</a></li>
       </ul>
     </li>
   </ul>
 </div>