Namespace translation updates

* Renamed 'no' to 'nb'
* Added 'fi' and 'ro'

Requested at:
* bug 59014
* https://meta.wikimedia.org/wiki/User_talk:Matma_Rex#Translation_of_Module_namespace_name
* https://translatewiki.net/wiki/Thread:Support/Rename_%22module%22_namespace
* https://meta.wikimedia.org/w/index.php?title=Stewards%27_noticeboard&oldid=6929612#Renaming_namespaces

Change-Id: I69ec61305d638dd39e70406e192101c89ab7a1f4