Take action if a documentation already exists and lesson event changes (substitutions)
Somehow lesson events should get documentations at some point.
Dev meeting decided:
- Create documentation in moment of editing
- Important: Allow setting in which time period editing is allowed (only current day, one day before etc.) → prevent too early entries
- Question: What should we do if a documentation already exists and there are changes (substitutions)? → take some action, but only if lesson is not already in the past!