Edit calendar #900
Description
The feature request
Add an editor for Calendar objects to make the process of creating/modifying calendars more productive.
Proposed solution
Add an editor of the Calendar objects in a table with a sample of the content of each row and an explicit "filter-keep" state (which is an explicit unassigned state) for the columns that should not be mapped to any category. Also include the option to map columns as time-related (assigned to a calendarColumnGroup without a category). The explicit "filter-keep" state should be stored as an annotation so it's visible in the following executions.
Later versions could add a custom sort order and a column filter based on several criteria.
Additional context
No response