Rewrite OLX documentation

[sarina]

Rewrite OLX documentation to focus on:

• Studio export format
• Describing Ulmo-current OLX that will actually import

Depends on openedx/training-courses#68

Docs: https://docsopenedxorg--1314.org.readthedocs.build/en/1314/educators/navigation/olx.html

[sarina]

@ormsbee @pdpinch @jswope00 I took a swing at rewriting the OLX documentation - updating screenshots, indicating what's no longer supported in the Studio UI, and making a course in OLX that actually imports into Studio (see openedx/training-courses#68 - that needs to merge before this merges)

I don't know how detailed you'd like to be in review. I think at minimum, this is a lot better than what we have now.

[kdmccormick]

hey, this hasn't fallen off my radar, just has fallen behind some Ulmo-critical libraries stuff. still planning to review soon so that we can get it merged before the holidays.

[sarina]

Thanks. I'd like to get it in before the Ulmo cut if possible, but it shouldn't be terribly difficult to backport if necessary.

[jswope00]

This is really impressive!! Some changes requested in the comments.

[sarina]

@jswope00 could you re-review since your review is blocking?

[sarina]

@kdmccormick - I'm going to go ahead and merge this, and we can do a review and make further corrections moving forward, so this can get into the Ulmo release.