Follow-up from "Fix wiki login"

Thom Wiggers
2018-10-24T19:26:53+02:00

The following discussion from !992 should be addressed:

- [ ] @twiggers started a [discussion](https://gitlab.science.ru.nl/thalia/concrexit/merge_requests/992#note_55114):

> Perhaps it's a good idea to move the wiki namespace into groups