As observed, it is not possible to translate extension namespaces at
translatewiki.net [1][2].
All the usual routes can be used, depending on your technical skills:
* File a [[Support]] request at
translatewiki.net
* File a bug in Bugzilla against the extension
* Submit a patch to Gerrit
-Niklas
[1] this is the preferred way to write it
[2] patches welcome
--
Niklas Laxström