make django tests working again, from ymh, see http://www.iri.centrepompidou.fr/dev/hg/comt/rev/e103299bccc0
{% extends "site/layout/base.html" %}
{% load i18n %}
{% block content %}
<h1>404: {% blocktrans %}Page not found{% endblocktrans %}</h1>
{% blocktrans %}The requested page could not be found.{% endblocktrans %}
{% endblock %}