'Signal handler to be called when a given user has signed up.'

def on_user_signed_up(self, sender, request, user, **kwargs):

    url = reverse('wiki.document', args=['MDN/Getting_started'])
    msg = (_('You    have    completed    the    first    step    of    <a    href="%s">getting    started    with    MDN</a>') % url)
    messages.success(request, msg)
    if switch_is_active('welcome_email'):
        if user.emailaddress_set.filter(verified=True).exists():
            send_welcome_email.delay(user.pk, request.LANGUAGE_CODE)
