Remove gmaps, george & add numpydoc
Remove gmaps, george & add numpydoc

gmaps kept asking for a jupyterlab rebuild.
george wanted to build from source.

numpydoc was wanted in #2252

ryanlovett/datahub,berkeley-dsep-infra/datahub,berkeley-dsep-infra/datahub,berkeley-dsep-infra/datahub,ryanlovett/datahub,ryanlovett/datahub