Add error view if digest is to long/short

templates/error.html

@@ -8,7 +8,14 @@
 {% block content %}
 <h1 class="error">{% trans 'Error!' %}</h1>
 
-<p>{% block errormessage %}{% trans 'Libravatar has encountered an error.' %}{% endblock errormessage %}</p>
+<p>{% block errormessage %}
+{% trans 'Libravatar has encountered an error.' %}
+{% if errormessage %}
+<br/>
+<br/>
+{% blocktrans %}{{ errormessage }}{% endblocktrans %}
+{% endif %}
+{% endblock errormessage %}</p>
 
 <div style="height:40px"></div>