Added link to list children of an article. Upgraded django-wiki version.

lms/templates/wiki/article.html

@@ -14,7 +14,11 @@
     
     <article class="main-article">
         {% if selected_tab != "edit" %}
-          <h1>{{ article.current_revision.title }}</h1>  
+          <h1>{{ article.current_revision.title }}</h1>
+          
+          {% if urlpath %}
+            <a href="{% url 'wiki:dir' path=urlpath.path %}">Show all children</a>
+          {% endif %}
         {% endif %}
         
         {% block wiki_contents_tab %}

repo-requirements.txt

 -e git://github.com/MITx/django-staticfiles.git@6d2504e5c8#egg=django-staticfiles
 -e git://github.com/MITx/django-pipeline.git#egg=django-pipeline
--e git://github.com/benjaoming/django-wiki.git@876357a#egg=django-wiki
+-e git://github.com/benjaoming/django-wiki.git@221fca1#egg=django-wiki
 -e common/lib/capa
 -e common/lib/xmodule