[I think that this topic fits better in the Ubuntu Unity Development category to be seen by the right people, but I’m not allowed to post a new topic there. Can some administrator please move it into that category.]
We got this message from a translator who asked how to correct translations of
The Unity family of packages was previously part of standard Ubuntu. Thus all the translation templates were made available to the translators via Launchpad, and the translations were included in the language packs.
Since those packages are no longer part of standard Ubuntu, they have been moved from main to universe, and that’s the reason for the current somewhat unclear situation. It’s important that the Unity7 team makes a decision about how to deal with translations going forward.
As @seb128 pointed out in a reply, it’s possible to re-enable the LP translation interface and the language packs for the Unity packages. The translations of those packages are generally in good shape, and this would probably be the smoothest solution.
For that to happen, someone needs to go through all the packages, add the line
debian/control file in each package source (where it’s not there already), and upload.