jupyterhub.authenticators for authenticators, jupyterhub.spawners for spawners
This has the effect that authenticators and spawners can be selected by name instead of full import string (e.g. 'github' or 'dummy' or 'kubernetes')
and, perhaps more importantly, the autogenerated configuration file will include a section for each installed and registered class.
The current list in the docs is out of date. The list
in the wiki is more up-to-date, and easier for folks
to change over time. In the long run, we should decide
where lists like this belong.
