Add links to gpg key and site source code

_includes/header.html

@@ -19,6 +19,11 @@
             <a class="page-link" href="{{ my_page.url | prepend: site.baseurl }}">{{ my_page.title }}</a>
           {% endif %}
         {% endfor %}
+
+        {% for link in site.data.top_links %}
+          <a class="page-link" href="{{ link.url }}">{{ link.title }}</a>
+        {% endfor %}
+
       </div>
       
     </nav>