Epic User Story: Manage Imported Events in my Calendar

[saumier]

As an owner of an Event Calendar in my region, I include events from regional arts organizations, BUT I need to fix or add missing data before I can display them in my calendar.

1. I fix imported events as needed by editing individual descriptions, sometimes changing the photo with another photo from Artsdata, and mapping event categories.
2. When a new event is added, I get notified so I can edit the individual descriptions and photos to my liking before they appear in my calendar.
3. When an existing event changes (date is added, date in cancelled, date is rescheduled, photo in changed, show is sold out, all show dates are cancelled, description is improved), I want to merge updates without conflicts (like adding new date) and decide how to manage conflicts (description is changed both by me and by external source, photo is changed both by me and by external source).
4. If an event is missing, I can add it to my calendar by typing in the data manually and uploading a photo.