{% if page.author %}
<div class="generated-sidebar portlet" id="p-author" role="author">
  <h3>{{ site.data.i18n[site.lang].label.author }}</h3>
  <div class="portlet-body">
    {% assign author = site.data.users[page.author] %}
    <ul>
      <li><a href="/{{ site.data.i18n[site.lang].prefix.user }}{{ page.author }}.html">{{ author.name }}</a></li>
    </ul>
    {% if author.logo %}
    <img src="/{{ author.logo }}" style="max-width: 100%;margin: 3px" />
    {% endif %}
  </div>
</div>  
{% endif %}