A bunch of layout changes to support a new category and make everything work better.

index.html

@@ -3,10 +3,10 @@ layout: default
 ---
 <div class="home">
   <div class="category-menu">
-    {% for category in site.category_titles %}
+    {% for category in site.category_metadata %}
         <span class="category-link">
           <a href="{{category.first | prepend: site.baseurl}}">
-            {{ category.last }}
+            {{ category.last["title"] }}
           </a>
         </span>
     {% endfor %}
@@ -22,15 +22,15 @@ layout: default
     </div>
   {% endif %}
     
-  {% include post_list.html categories=site.main_categories limit=10 %}
+  {% include post_list_main.html limit=10 %}
 
   <p class="post-meta" style="margin-top: 40px">
     For more posts, choose a category:
     <ul>
-      {% for category in site.category_titles %}
+      {% for category in site.category_metadata %}
       <li>
         <a href="{{category.first | prepend: site.baseurl}}">
-          {{category.last}}
+          {{ category.last["title"]}}
         </a>
       </li>
       {% endfor %}