Summary:
Fixes T11804. This probably isn't perfect but seems to work fairly reasonably and not be as much of a weird nonsense mess like the old behavior was.
When a user edits a recurring event, we ask them what they're trying to do. Then we more or less do that.
Test Plan:
- Edited an event in the middle of a series.
- Edited the first event in a series.
- Edited "just this" and "all future" events in various places in a series.
- Edited normal events.
- Cancelled various events.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11804
Differential Revision: https://secure.phabricator.com/D16782
a0ea31f47f