docs: Small updates and visual improvements of resulting HTML

Change-Id: Ic707fdb2625a6d4d9695c4d7f97b72e0617c1a6f
diff --git a/docs/named_data_theme/layout.html b/docs/named_data_theme/layout.html
index 0dc8b44..9f186e4 100644
--- a/docs/named_data_theme/layout.html
+++ b/docs/named_data_theme/layout.html
@@ -36,8 +36,13 @@
         <div class="sidebar">
           {%- block sidebartoc %}
           <h3>{{ _('Table Of Contents') }}</h3>
-          {{ toctree() }}
+          <ul>
+            <li class="toctree-l1"><a class="reference internal" href="doxygen/annotated.html">API documentation (doxygen)</a></li>
+          </ul>
+
+          {{ toctree(includehidden=True) }}
           {%- endblock %}
+
           {%- block sidebarsearch %}
           <h3 style="margin-top: 1.5em;">{{ _('Search') }}</h3>
           <form class="search" action="{{ pathto('search') }}" method="get">
diff --git a/docs/named_data_theme/named_data_header.html b/docs/named_data_theme/named_data_header.html
index d9cb50b..c84397c 100644
--- a/docs/named_data_theme/named_data_header.html
+++ b/docs/named_data_theme/named_data_header.html
@@ -32,7 +32,7 @@
 
          <!--top menu-->
          <div class="nine columns" id="menu_container" >
-           <h1><a href="#">$projectname documentation</a></h1>
+           <h1><a href="http://named-data.net/doc/ndn-cxx/$projectnumber/">$projectname $projectnumber documentation</a></h1>
          </div>
     </div>
 </div><!--header container end-->