Stripe SCA (#1275)

* Stripe SCA
- Upgrade to latest Stripe API
- Deprecate Stripe Checkout for CC
- Migrate CC payments to Payment Intents

* Move SCA to its own view

* Handle CardErrors for PaymentIntents

* Abilty to handle charge webhooks with PaymentIntents

* Better handling of Stripe References

* Fix Stripe Tests

* Move SCA page into orderlayout; perform iFrame SCA

* Handle disputes and pi-webhooks better, fill more into ReferencedStripeObject

* Optionally pass prefetched PaymentIntent to handle-func

* Fix style

* Send message to window.parent not window.top (widget compatibility)

* More accurate loading message

* Show a cog on sca_return.html. On a good internet connection, you barely see it, but on a bad one…

* Robust error handling

* If it's a method and used like a method, let's actually call it like a method!

* Remove logging statement

* Fix JavaScript interference with other frame events

* Use 4:3 aspect ratio, but at least 600px

* Adjust to django_scopes

src/pretix/plugins/stripe/tasks.py

@@ -4,7 +4,6 @@ from urllib.parse import urlsplit
 import stripe
 from django.conf import settings
 
-from pretix.base.models import Event
 from pretix.base.services.tasks import EventTask
 from pretix.celery_app import app
 from pretix.multidomain.urlreverse import get_domain
@@ -29,9 +28,8 @@ def get_stripe_account_key(prov):
 
 
 @app.task(base=EventTask, max_retries=5, default_retry_delay=1)
-def stripe_verify_domain(event_id, domain):
+def stripe_verify_domain(event, domain):
     from pretix.plugins.stripe.payment import StripeCC
-    event = Event.objects.get(pk=event_id)
     prov = StripeCC(event)
     account = get_stripe_account_key(prov)