Samuel Imfeld

refs https://github.com/hitobito/hitobito/pull/2875

Fixes #2848 - makes sure that `:leaders` atribute accessor exists for courses - adds a constant defining the leader roles to be overridden in wagons

API: 'include=leaders' is broken for `/events` API

1

### Aktuelles Verhalten (when signed into pbs.puzzle.ch) `https://pbs.puzzle.ch/api/events?include=dates,advisor&filter[group_id][eq]=391&filter[type]=Event::Course` returns HTTP 200 with advisor and dates fields included `https://pbs.puzzle.ch/api/events?include=dates,advisor,leaders&filter[group_id][eq]=391&filter[type]=Event::Course` returns HTTP 500 ### Gewünschtes Verhalten According to https://github.com/hitobito/hitobito/pull/2550, an array of...

### Aktuelles Verhalten - https://pbs.puzzle.ch/de/help_texts works - https://pbs.puzzle.ch/fr/help_texts HTTP 500 - https://pbs.puzzle.ch/it/help_texts HTTP 500 ### Gewünschtes Verhalten help texts can be edited in all supported languages ### Schritte zu reproduzieren...