duplicati.github.io/_includes/footer.html

<footer role="contentinfo" id="site-footer">
    <nav role="navigation" class="menu bottom-menu">
        <div class="inner-float">
          {%if site.owner.gitterroom %}
          <ul class="menu-item">
            <li class="first btn" id="sidecar-target">Open chat</li>
          </ul>
          {% endif %}

            {% for group in site.data.footer %}
            <ul class="menu-item">
                <li class="first">{{ group.title }}:</li>
              {% for link in group.items %}
                {% if link.url contains 'http' %}
                  {% assign domain = '' %}
                {% else %}
                  {% assign domain = site.url %}
                {% endif %}
                <li><a href="{{ domain }}{{ link.url }}" title="{{ link.title }}" {% if link.url contains 'http' %}target="_blank"{% endif %}><img alt="{{ link.title }}" src="{{ site.url }}/{{ link.image }}" /></a></li>
                {% endfor %}
           </ul>
          {% endfor %}


        </div>
    </nav><!-- /.bottom-menu -->
    <!--
    <p class="copyright">&#169; {{ site.time | date: '%Y' }} <a href="{{ site.url }}">{{ site.title }}</a> powered by <a href="http://jekyllrb.com" rel="nofollow">Jekyll</a> + <a href="http://mmistakes.github.io/skinny-bones-jekyll/" rel="nofollow">Skinny Bones</a>.</p>
    -->
</footer>