As suggested by "g38" on irc, a way to sort events by date when browsing would be nice.
Thinking about it, I guess the "birthday" feature for people could be used to support this:
- Sorting people in the CategoryPage by age *should* be trivial (I haven't looked at the implementation yet)
- Care needs to be taken to achieve a sensible wording
- In addition to the current birthday editor, a streamlined way to add dates is required (e.g. auto-set date; context-menu to set date on a category, ...)