Cleanup handling of dates in /admin-ui/events/events.json

Description

The endpoint /admin-ui/events/event.json delivers both the bibliographical and the technical start and end dates. While working at the code, I've found it somewhat messy in means of being unclear whether the values are still used.

Steps to reproduce

None

Status

Assignee

Unassigned

Reporter

Sven Stauber

Criticality

None

Tags (folksonomy)

None

Fix versions

Affects versions

4.2

Priority

Minor
Configure