keep start/end time when one time is changed in an existing shift
Don't change end time when start time of an existing shift is changed.
Now: If start time gets changed, end time is set on new start time + 1 hour. !Risk of ruining your shift plan, if you are unaware of this behavior!
Change in docs, when adapted: https://code.immerda.ch/immerda/content/docs.immerda.ch/-/edit/master/content/de/services/shifts.md
Edited by yki