* Make next url authentication backend dependent
* Rename authentication next_url to get_next_url.
* Add test for custom authentication backend get_next_url.
* Fix typo in docstring of authentication backend get_next_url.
* Remove check password for event deletion, instead require recent login.
* Reauthenticate for backends using authentication_url.
* Require recent login for data shredder and prompt slug instead of password.
* Fix tests for recent login required on event delete and data shred.
* Pull request remarks for recent login required for event delete and data shred.
* Remove unused imported check_password.
* Event creation: Add option to select existing team instead of provisioning.
* Event creation: disallow event team provisioning on organizer level.
* Event team provisioning: update default setting location and display strings.
* Update src/pretix/control/views/main.py
Co-Authored-By: Raphael Michel <mail@raphaelmichel.de>
