The common event and series catalog UI adapters define themselves a title.
Both are provided in their respective .cfg files but are not read from the .cfg
Both use a hard coded value
Episode uses a translatable string format in both locations but series uses plain English
the Episode string does not appear in the lang files
I don't think either is used in the UI but are used internally when creating lists
Make both strings translatable and read them from the .cfg so as the latter should be the case for any additional catalog UI adapters.