Add navigation template block (#659)

* Add the ``extranav`` block after the ``menu`` block in the template.

* Use one big navigation block

* Update changelog.rst

Author: schettino72

docs/changelog.rst

@@ -14,6 +14,8 @@ Fixes
 Other Changes
 --------------
 
+* Add the ``navigation`` template block around the navigation area.
+
 0.4.3
 ======
 

sphinx_rtd_theme/layout.html

@@ -142,6 +142,7 @@
           {% endblock %}
         </div>
 
+        {% block navigation %}
         <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
           {% block menu %}
             {#
@@ -162,6 +163,7 @@
             {% endif %}
           {% endblock %}
         </div>
+        {% endblock %}
       </div>
     </nav>