Moved the wiki 404 page into the django-wiki project.

lms/templates/wiki/wiki-404.html

-{% extends "wiki/base.html" %}
-{% load wiki_tags i18n %}
-{% load url from future %}
-
-{% block pagetitle %}{{ article.current_revision.title }}{% endblock %}
-
-{% block wiki_breadcrumbs %}
-{% include "wiki/includes/breadcrumbs.html" %}
-{% endblock %}
-
-{% block wiki_contents %}
-
-  <div class="missing">
-    <p>This article was not found, and neither was its parent article. <a href="#">Go back to the main wiki article</a></p>
-  </div>
-
-{% endblock %}

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@e237b2ac#egg=django-wiki
+-e git://github.com/benjaoming/django-wiki.git@876357a#egg=django-wiki
 -e common/lib/capa
 -e common/lib/xmodule