Feature/jupyterlab
JupyterLab is provided side-by-side with Jupyter Classic interface with same process.
Published URL changed:
- jupyterlab-url provides IPv6 URL to JupterLab interface
- jupyter-class-url provides IPv6 URL to the classic UI
Thanks to using only one process, the path in the URL differentiates the style of the interface.
Note: This MR replaces closed https://lab.nexedi.com/nexedi/slapos/merge_requests/207