Comment (by Steven R. Brandt):

I would like to include vim in case students want to open a terminal and edit anything. I'd rather add emacs than take out vim. Here's a pull request for the change.

https://github.com/nds-org/jupyter-et/pull/10

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2234/trouble-in-the-tutorial-server