More progress with Jekyll

_includes/header.html

@@ -14,8 +14,9 @@
       </a>
 
       <div class="trigger">
-        {% for page in site.pages %}
-          {% if page.title %}
+        {% assign sorted_pages = site.pages | sort:"menu_order" %}
+        {% for page in sorted_pages %}
+          {% if page.title and page.menu_order %}
           <a class="page-link" href="{{ page.url | prepend: site.baseurl }}">{{ page.title }}</a>
           {% endif %}
         {% endfor %}