feat!: replace old demo course with the new one

[kdmccormick]

This subsumes the openedx-demo-course-new into this repo, and removes the entirety of the old demo course. We will archive openedx-demo-course-new after merging this PR.

Notes for reviewers:

• I made this PR by rm'ing the current repository and replacing it with the contents of https://github.com/openedx/openedx-demo-course-new, plus just a couple tweaks:
  • I changed the GHA CI branches from main back to master.
  • I put openedx.yaml back so this this repo continues to be released.
  • I fixed the repo name in catalog-info.yaml
• The insane -400k diff is probably because the jsmol library had been entirely copied into this repo previously.
• Rather than trying to read the diff, I would just browse the branch a bit as a sanity check.

Operator Impact

On its own, this PR will break the tutor local do importdemocourse command in Tutor Nightly. Merging this update to Tutor Nightly will fix the command again. With that PR merged:

• For Quince (and earlier) users, the default remains the old course. Specifically:
  • Get the old course with tutor local do importdemocourse
  • Get the new course with: tutor local do importdemocourse demo-course/course --version master && tutor local do importdemolibraries --version master
• For master and Redwood+ users, the default becomes the new course. Specifically:
  • Get the old course with: tutor local do importdemocourse --version open-release/quince.1
  • Get the new course and library with: tutor local do importdemocourse && tutor local do importdemolibraries

[kdmccormick]

@sarina One last PR for you! With this one merged and the linked Tutor PR merged, we'll be fully prepped to switch over to the new demo course for Redwood.

[sarina]

This looks good, before I give thumbs-up I want to do a quick test of the tar.gz into my personal instance, which I'll do now

Edit: I'm getting errors; I'll work with John to resolve them this week.

[sarina]

This should be updated with the changes made in https://github.com/openedx/openedx-demo-course-new/pull/4 - once that's done we can go ahead and merge.

[kdmccormick]

@sarina I pushed two commits, ready for your review:

1. Copy in @jswope00 's recent changes: https://github.com/openedx/openedx-demo-course/pull/47/commits/ab4a57a11c46fbfbd3479e059e64d698bd1d5a88
2. Remove some macOS hidden-file-cruft from the OLX tars, and update the Makefile so that cruft doesn't get added to the tars next time: https://github.com/openedx/openedx-demo-course/pull/47/commits/59e63209f2b66c7b405ccee3f7590730d384a810

I just need to address Régis's comments over on the Tutor PR, and then I think we're all set!

[sarina]

Hey @kdmccormick - we merged in one more change to https://github.com/openedx/openedx-demo-course-new - it'd be good to get this updated & merged, so we can close down the openedx-demo-course-new repo and churn on this PR. Let me know the best way to proceed - should we merge this and port the changes from the last PR in a separate PR?

[kdmccormick]

@sarina I was holding off on merging this because it'll break importdemocourse in Tutor Nightly unless the Tutor PR is merged first. The drift between this and openedx-demo-course-new isn't good, though, so I'm going to merge this now and the Tutor fix will be a fast follow.