 #6429 Added jupyterlab and jupyterhub. (#6472)
 #6429 Added jupyterlab and jupyterhub. (#6472)

* #6429 Added jupyterlab and jupyterhub.

* #6429 Added module beakerx for jupyterlab.

* #6429 Replaced installing with npm to local sources.

twosigma/beaker-notebook,twosigma/beakerx,twosigma/beaker-notebook,jpallas/beakerx,jpallas/beakerx,twosigma/beakerx,jpallas/beakerx,jpallas/beakerx,twosigma/beaker-notebook,twosigma/beakerx,twosigma/beakerx,jpallas/beakerx,twosigma/beakerx,jpallas/beakerx,twosigma/beaker-notebook,twosigma/beakerx,twosigma/beaker-notebook