As an event participant, I want to be able to export information about the event to my external calendar, so that I can keep track of the event and remember it in a calendar system that is already used in my daily life.
Background: We have learned from our survey findings and from our conversations with organizers that people sometimes forget about events that they had signed up for. One way we can improve this situation is to create iCal integration between Event Registration and external calendars. For this epic, we want event organizers and participants to be able to add the event to their external calendar of choice, so that they can access the benefits of an external calendar, such as event reminders.