Configs are now layered on top of each other. If a config file is found in multiple directories, they are merged together. Higher fields will override lower fields. This way, if one field is missing in a higher priority file, the lower priority can still be used.
Config files may now have a 'lock' key. If a config file has such a key, ConfigORM will refuse to commit changes.
This allows the developer to use Core::getEnv() in config files, without risk of it being overwritten by a commit.
