{% load mptt_tags %}{% load url from future %}
<ul class="tree_bulletlist">
    {% recursetree page_list %}
        <li{% if active_page_instance and active_page_instance.slug == node.slug %} class="active"{% endif %}>
            <a href="{% url 'documents-page-details' node.slug %}">{{ node.title }}</a>
            {% if not node.is_leaf_node %}
                <ul class="children">
                    {{ children }}
                </ul>
            {% endif %}
        </li>
    {% endrecursetree %}
</ul>
<div class="cale"></div>