Fix hard-coded scheme in account activation email

app/authentification/templates/acc_active_email.html

@@ -1,5 +1,5 @@
 {% autoescape off %}
 Hi {{ user.username }},
 Please click on the link to confirm your email,
-http://{{ domain }}{% url 'activate' uidb64=uid token=token %}
+{{ scheme }}://{{ domain }}{% url 'activate' uidb64=uid token=token %}
 {% endautoescape %}

app/authentification/views.py

@@ -39,6 +39,7 @@ class SignupView(TemplateView):
             message = render_to_string('acc_active_email.html', {
                 'user': user,
                 'domain': current_site.domain,
+                'scheme': request.scheme,
                 'uid': urlsafe_base64_encode(force_bytes(user.pk)).decode(),
                 'token': account_activation_token.make_token(user),
             })