Fully reproducible project or workflow

[BoPeng]

With recent ideas on folder-based notebook (#240 ), sandbox (#262), and user of docker, we are ready to conceptualize "fully reproducible" project or workflow. In essence:

1. Physically speaking the project is a folder with a notebook, required data, output, and configuration files that specifies environment.
2. On the surface the notebook could be viewed in a browser
3. The notebook could be edited in a Jupyter environment.
4. From command line, the project can be reproduced in a sandbox-like environment with only docker services, or serves as a complete workflow that accepts parameters...

The project or workflow could be validated on a k8s cloud if needed.