Remove our categorization hack, and add category view pages instead.

index.html

@@ -5,7 +5,7 @@ layout: default
   {% for category in site.categories %}
     {% if category.first == "meta" %} {% continue %} {% endif %}
     <div class="column col-{{site.categories.size | minus: 1}}">
-      {% include category_list.html category=category.first %}
+      {% include category_list.html category=category.first limit=5 %}
     </div>
   {% endfor %}