* Fix not allowing program times on event series (API/copy)
* Return 400 when reading endpoint in event series
* add docs program times not available on event series
* fix isort
* Add program times for items
* Fix frontend date validation
* Add ical data for program times [wip]
* Improve ical data for program times
* Remove duplicate code and add comments
* Adjust migration
* Remove program times form for event series
* Add pdf placeholder [wip]
* Improve explanation text with suggestion
Co-authored-by: Raphael Michel <michel@pretix.eu>
* Fix import sorting
* Improve ical generation
* Improve ical entry description
* Fix migration
* Add copyability for program times fot items and events
* Update migration
* Add API endpoints/functions, fix isort
* Improve variable name
Co-authored-by: Richard Schreiber <schreiber@rami.io>
* Remove todo comment
* Add documentation, Change endpoint name
* Change related name
* Remove unnecessary code block
* Add program times to item API
* Fix imports
* Add log text
* Use daterange helper
* Add and update API tests
* Add another API test
* Add program times to cloning tests
* Update query count because of program times query
* Invalidate cached tickets on program time changes
* Reduce invalidation calls
* Update migration after rebase
* Apply improvements to invalidation from review
Co-authored-by: Richard Schreiber <schreiber@rami.io>
* remove unneccessary attr=item param
* remove unnecessary kwargs for formset_factory
* fix local var name being overwritten in for-loop
* fix empty formset being saved
* Use subevent if available
* make code less verbose
* remove double event-label in ical desc
* fix unnecessary var re-assign
* fix ev vs p.subevent
---------
Co-authored-by: Raphael Michel <michel@pretix.eu>
Co-authored-by: Richard Schreiber <schreiber@rami.io>
