Event looks like registered for though on waiting list

Job Doesburg
2020-02-17T21:55:37+01:00

When on the waiting list for an event, it still looks like you are registered for that event.

### Current behaviour / Reproducing the bug

- In the calendar stream, the event does appear in your calendar
- Cancelling your registration does show the warning that you have to pay a fine, if after the unregistration deadline
- In the event overview calendar, the dot in front of the event is colored as if you are registered.

### Expected behaviour

- Do not appear in the calendar stream
- Do not show a message that you cannot unregister without having to pay a fine, but something different more fit to the situation
- In the event overview, show some other, pending-ish, colored dot.