Pluggable permissions (#5728)

* Data model draft

* Refactor query and assignment usages of old permissions

* Backend UI

* API serializer

* Big string replace

* Docs, tests and fixes for teams api

* Update docs for device auth

* Eliminate old names

* Make tests pass

* Use new permissions, remove inconsistencies

* Add test for translations

* Show plugin permissions

* Add permission for seating plans

* Fix plugin activation

* Fix failing test

* Refactor to permission groups

* Update doc/api/resources/devices.rst

Co-authored-by: luelista <weller@rami.io>

* Update doc/api/resources/events.rst

Co-authored-by: luelista <weller@rami.io>

* Update src/pretix/api/serializers/organizer.py

Co-authored-by: luelista <weller@rami.io>

* Fix typo

* Fix python version compat

* Replacement after rebase

* Add proper permission handling for exports

* Docs for exporters

* Runtime linting of permission names

* Fix typos

* Show export page even without orders permission

* More legacy compat

* Do not strongly validate before plugins are loaded

* Rebase migration

* Add permission for outgoing mails

* Review notes

* Update doc/api/resources/teams.rst

Co-authored-by: Richard Schreiber <schreiber@pretix.eu>

* Clean up logic around exporters

* Review and failures

* Fix migration leading to forbidden combination

* Handle permissions on event copying

* Remove print-statements

* Make test clearer

* Review feedback

* Add AnyPermissionOf

* migration safety

---------

Co-authored-by: luelista <weller@rami.io>
Co-authored-by: Richard Schreiber <schreiber@pretix.eu>

src/pretix/presale/views/order.py

@@ -138,7 +138,7 @@ class OrderDetailMixin(NoSearchIndexViewMixin):
                 code=self.kwargs['order'], received_secret=self.kwargs['secret'], tag=None,
             )
 
-            if has_event_access_permission(self.request, 'can_view_orders'):
+            if has_event_access_permission(self.request, 'event.orders:read'):
                 return order
 
             if order.customer is None or not order.customer.is_verified or self._allow_anonymous_access():
@@ -255,7 +255,7 @@ class TicketPageMixin:
 
         ctx['download_buttons'] = self.download_buttons
 
-        ctx['backend_user'] = has_event_access_permission(self.request, 'can_view_orders')
+        ctx['backend_user'] = has_event_access_permission(self.request, 'event.orders:read')
 
         return ctx