Calendar: Adapt to libical 3.0.12 change
In the Tasks view I have tasks only with DUE and tasks with DTSTART and DUE. When a task has DUE and DTSTART, the preview shows the fields Start Date, End Date, and Due Date. All properties have VALUE=DATE.
- Since tasks have no End date, but Due, the preview shall not show End date for tasks.
Edited by Milan Crha