test/_layouts/page.html

{% include header.html %}
        <div class="medium-12 columns content-box">
            <div class="whitebox">
              <div class="lang-list">
                {% assign translations = site.pages | where: "ref", page.ref | sort: 'lang' %}
                {% for node in translations %}
                  <a href="{{ node.url }}">{{ site.langs[node.lang] | escape }}</a>
                {% endfor %}
              </div>

              {{ content }}
            </div>
        </div>
{% include footer.html %}