The current behavior lists by default only upcoming events in the current category, which may confuse users who they just clicked from an existing event, belonging to a category and may end up with a "No events" message, just because the event they are coming from has passed and there are no upcoming events in the same category.

I would link to `/events/category/[category]/period/all` instead of `/events/category/[category]` which translates to `/events/category/[category]/period/future`.

What do you think @ppapadeas?