Use setup.py for installation, change how config file handling works and it's filename.

- Use setup.py. Hopefully correctly enough.
- Attempt to automatically find the config file upon a new profile's creation
and copy it to the profile's directory if possible.
- Change the config filename from 'config.yaml' to '4chtf-conf.yaml' so the name
can stand-alone.
Include the PyYAML license file.