Update compose files, authelia config. Fix banner. Write galaxy_nginx.conf only if needed. Modify authelia_config_path condition. Modify get config args. Remove deploy_stack_for_current_organism.instance_url

more config options (host, passwords, tripal themes), adapted methods to handle several histories in the same instance

autoload.py: script implementation, easier to understand and use. small fixes to workflow.py and main.py