Added a custom 403 page, extending the datatracker base.html template.

 - Legacy-Id: 18331

Author: levkowetz

ietf/templates/403.html

@@ -0,0 +1,21 @@
+{# Copyright The IETF Trust 2007, All Rights Reserved #}
+{% extends "base.html" %}
+{% load static %}
+{% block title %}404 Not Found{% endblock %}
+{% block content %}
+
+  <img class="ietflogo" src="{% static 'ietf/images/ietflogo.png' %}" alt="IETF" style="width: 10em">
+  <div class='alert'>
+
+    <h2>Restricted Access.</h2>
+
+
+    <p>The page you tried to reach is not generally avaiable.</p>
+
+    <p>{{ exception }}</p>
+
+    <p>If you think this is a server error, please contact <a href="mailto:{{ bugreport_email }}">{{ bugreport_email }}</a>.</p>
+
+  </div>
+{% endblock %}
+