Add a bunch more blog stuff and templates

templates/404.html

@@ -1,6 +1,6 @@
 {% extends "base.html" %}
 
 {% block content %}
-  <h1>404, page not found</h1>
+  <h1 class="blocktitle">404, page not found</h1>
   <p>lost? you can always return <a href="/">home</a>.</p>
 {% endblock content %}