The Config object wasn't being used at all in the locale module; reset it to empty and start using it in locale, so that configuration functionality can be added to it as-needed, and with the necessary refactoring built-in.
- Although ::init() was called, none of the actual functionality from localeglobal was still in use.
- ci/calamaresstyle - sort includes by kind (local module, Calamares, Qt, STL) - add copyright line
