gist-it sometimes doesn't read the environent from GITHUB_TOKEN

[algal]

Three of us (me, Faisal, and Nate) experienced an issue where gist-it does not read the token from the environment variables GITHUB_TOKEN or GIST_TOKEN.

In this situation, it is possible to workaround the issue by manually writing the token into the notebook.json file.

Here were my observations:

• when I went to ~/.jupyter/serverconfig/notebook.json, the token was not set and in fact a key was set to default gists to private, when I had noticed UI defaulted them to private. So it seems this file not only had not been written with the token, it was not being read regarding private/public.
• once I set the value in that file, it worked.
• there is another file on my disc ./.jupyter/nbconfig/notebook.json, which has some keys related to nbmeta and collapsible headings, but nothing related to gists.
• guess: maybe something is writing or reading the wrong notebook.json?

This is not a grand issue in the scheme of things but I am noting it here so we can follow up as needed.

Discord thread: https://discord.com/channels/1200111522916094103/1288615077263708245