MAINT: post JB2 transition cleanup

[bsipocz]

Cleaning up old configs and making files named consistently between the repos.

Also, thebe and binder interactivity is opted in now.

[troyraen]

Thanks, LGTM other than the build fail.

/bin/bash: line 1: npm: command not found

Not sure where that's coming from.

What do thebe and binder interactivity provide?

[bsipocz]

somehow the node installing step is failing, I suggest waiting a bit and then restart CI

binder+thebe will add in page execution, more about it here: https://mystmd.org/guide/in-page-execution
(it's kind of experimental, but worked when I built it locally. I would see it as an alternative of the rocket launch options on the old, JB1 site)

[bsipocz]

Failures are unrelated and the preview is good enough as is to check out what this PR does, e.g. :

https://circle.scientific-python.dev/output/job/4beaa9f5-2bf4-40d1-a4cb-c78da2839b90/artifacts/0/_build/html/siav2-seip

(it's mostly the pop-out into a jupyterhub, but one can also restart the execution of the cells, etc with the buttons (there are some known issues with them, but it maybe useful to enable these just to collect feedback for upstream, too):

[bsipocz]

SO, imo, this should now go in.

[troyraen]

The interactivity looks cool. I'm a bit concerned about pushing experimental features into production at IRSA without some prior discussion. It affects the user experience. I'll leave this one to your discretion.

[bsipocz]

I would say let's try it, the functionality is not broken just not as smooth as it apparently was with JB1 (but we never used it there).
Being able to launch the notebooks out to binder is actually quite nice even if the on page interactivity is a bit non-intuitive.