euscanwww: included django-registration and tweaked templates

Signed-off-by: volpino <fox91@anche.no>

euscanwww/djeuscan/templates/registration/activation_complete.html

@@ -0,0 +1,6 @@
+{% extends "registration/_registration_base.html" %}
+{% block title %}Activation complete{% endblock %}
+{% block content %}
+  Thanks, activation complete! You may now <a href='{% url auth_login %}'>login</a>
+  using the username and password you set at registration.
+{% endblock %}