Liquid page weighting

page_weights.html

<ul>
  {% for weight in (0..100) %}
    {% for node in site.pages %}
      {% if node.weight == weight or node.weight == null and weight == 0 %}
        <li>
          <a href="{{node.url}}" title="{{node.title}}">{{node.title}}</a>
        </li>
      {% endif %}
    {% endfor %}
  {% endfor %}
</ul>