If I understand correctly, there are some translatable messages that are unique to CologneBlue skin, and aren't used elsewhere in core, such as "qbedit".
They must be moved to the CologneBlue repo, along with qqq and translations.
I grepped for them, and didn't find them anywhere in core PHP or JS code, but they do appear in some tests/parser/preprocess/All_system_messages* files, and I'm not sure what to do about those lines.