Conf files unavailable fix

I have included the config files AND the assets in the library package. Assets shall now be reachable from the code even if installed using pip as well as the default configs. Users can specify another conf search directory using --config-dir parameter of Hydra, while keeping the reference configs still accessible and usable. The reference configs can also be obtained (copied) from the library package by running the give_me_conf module. See the readme for details.