The events API is paginated with 50 events. When searching for a
specific event within a large Pretix installations UX becomes very bad.
Using this filter users are able to quickly find their event by slug or
their name/location in any language.
* Allow filtern events-ressource on API by attrs
* Document meta-data attr-filter for order resource
* Actually document the change and not some random other nonsensical thing...
* Doc for subevent-filtering
* Test for attr-filtering on events resource
* Allow attr-filtering on subevents
* Add attr-filter test for subevent
* Update doc/api/resources/subevents.rst
* Update src/tests/api/test_subevents.py
* Update doc/api/resources/events.rst
* Initial work on seating
* Add seat guids
* Add product_list_top
* CartAdd: Ignore item when a seat is passed
* Cart display
* product_list_top → render_seating_plan
* Render seating plan in voucher redemption
* Fix failing tests
* Add tests for extending cart positions with seats
* Add subevent_forms to docs
* Update schema, migrations
* Dealing with expired orders
* steps to order change
* Change order positions
* Allow to add seats
* tests for ocm
* Fix things after rebase
* Seating plans API
* Add more tests for cart behaviour
* Widget support
* Adjust widget tests
* Re-enable CSP
* Update schema
* Api: position.seat
* Add guid to word list
* API: (sub)event.seating_plan
* Vali fixes
* Fix api
* Fix reference in test
* Fix test for real
* MKBDIGI-185: Added update/create to events
* MKBDIGI-185: Added validation for 'slug, 'live' on event endpoint
* MKBDIGI-185: Code formatting
* MKBDIGI-185: Added 'plugins' to 'event' endpoint
* MKBDIGI-185: Merge migrations
* MKBDIGI-185: Cleaned up static methods
* EBILL-5: Added delete endpoint for event
* EBILL-5: Merge migrations
* EBILL-5: Fixed imports
* EBILL-5: Changed plugins to only list plugins enabled for the event
* EBILL-5: Added clone event endpoint
* EBILL-5: Removed permissions check API test for events
* EBILL-5: Merged master, updated migrations
* EBILL-5: Updated api permissions check for CRUD on events
* EBILL-5: Removed 'unique_together' constraint on event model
* EBILL-5: Removed call to changed static methods in test
* EBILL-5: Changed Event 'has_paid_things' to a property for consistency
* EBILL-5: Fixed created response code in documentation
* EBILL-6: Documentation fixes
* EBILL-6: Fixed typo
* EBILL-6: Fixed permissions
* EBILL-6: Added note on copying settings to documentation
* EBILL-6: Created model method for deleting sub objects on event before delete
* EBILL-6: Fixed typo
* EBILL-6: Re-added meta_data as read-only
* EBILL-6: Fixed permissions test
* EBILL-6: Added plugins issues check before live. Moved issues property from form to Event model.
* EBILL-6: Upped version number in documentation
* Add write support for MetaDataField
* EBILL-6: Expanded documentation for the clone endpoint, made behaviour of 'is_public' similar to 'plugins' for consistency
* EBILL-6: Re-added EventCRUDPermission
* EBILL-16: Updated documentation with permission model for the API
* EBILL-16: Added 'has_subevents' validation to ensure it cannot be changed once event is created.
* EBILL-16: Fixed event clone not differentiating between "not set" and "deliberately set to False"
* EBILL-16: Fixed event live validation
* EBILL-16: Added logging of live activated/deactivated
* EBILL-16: Fixed create event bug when no 'meta_data' supplied
* EBILL-16: Typo fixed
* EBILL-16: Added log display for "event created"
* EBILL-16: Enabling a plugin now calls 'installed' if applicable and log entries are added
* EBILL-16: Updated tests for events
* Do not allow enabling restricted plugins via the API
* Remove unused code
