placing the content_title block inside the content block

themes/default/templates/categories.html

@@ -2,11 +2,12 @@
 
 {% block title %}{{ SITENAME }} - Categories{% endblock %}
 
+{% block content %}
+
 {% block content_title %}
 	<h1>Overview</h1>
 {% endblock %}
 
-{% block content %}
 	{% for category, articles in categories|sort %}
 		<h1 class="category">{{ category }}</h1>
 		{% for article in articles %}