Event creation

Activities of type Event have 3 date fields:

• event date
• publication date
• expiration date

The event date is the date and time that the event is scheduled to take place. The date & time are displayed on the event details page, it is used to order events in the Upcoming Events widget, and also to display the "!" tag on events that the user RSVPed that are now in the past.

The publication date is used to filter events. All the places referencing events have a filter to exclude pub_date greater than today. The publication date can also be used in the activity unlock function afterPublished("task-name")

The expiration date is also used to filter events. Similar as pub_date, it is part of the filter that exclude all events that have an expire_date less than today.