Once "nb" is set up: sites switching to "nb" who wish to delete the "no" language pack should not forget to:
- make sure no user has "no" as default language on their profile (do some SQL hocuspocus to make sure)
- site language is set to "nb"
- multilang tags are changed to "nb"
- realise that course backups or backups of the database with "no" will no longer restore properly
- ... (please add if necessary...)