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/setup.py

@@ -125,7 +125,7 @@ setup(
         'pycparser==2.13',
         'django-redis==4.10.*',
         'redis==3.2.*',
-        'stripe==2.0.*',
+        'stripe==2.29.*',
         'chardet<3.1.0,>=3.0.2',
         'mt-940==3.2',
         'django-i18nfield>=1.4.0',