Allura/allura/ext/admin/templates/widgets/users.html

<div class="portlet">
  <h4>Project Users</h4>
  <ul>
    {% for user in project_users %}
    <li>
    <a href="{{user.url()}}profile/">{{user.display_name}}</a></li>
    {% endfor %}
  </ul>
</div>