add edit button to two colum pages

        </div>

    {% endfor %}

    </div>

    <a href="{{ this.parent|url }}">Back to {{ this.parent.title }}</a>

    <div class="card mt-5">

      <ul class="list-group list-group-flush">

        <!--li class="list-group-item"><a><span class="card-text text-muted">{{ _("Contributors to this page:") }} <a href="#" title="#">cypherpunk</a></span></li-->

        <li class="list-group-item">

                <a href="{{ this.parent|url }}">{{ _("Back to previous page: ") }}{{ this.parent.title }}</a> - <a href="https://github.com/torproject/community/edit/master/content{{ this.path }}/contents.lr">{{ _("Edit this page") }}</a>

        </li>

      </ul>

    </div>

  </div>

</div>

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