Added Tech Notes to the doc sidebar

Author: qmathe

Documentation/Templates/menu.html

@@ -9,6 +9,7 @@ <h2><!-- etoile-project-name --></h2>
 <h3>Main</h3>
 <ul>
 <!-- Guides should be added here -->
+<li><a href="http://coreobject.org/technotes/">Tech Notes</a></li>
 <li><a href="APIOverview.html">API Overview</a></li>
 </ul>