Update model/migrations-related content in code architecture slides

[jdavcs]

This is just a reminder for me. If we need an issue for all required updates to those slides, we can close this and add it as a todo item.
https://training.galaxyproject.org/training-material/topics/dev/tutorials/architecture/slides.html#1

[hexylena]

Would there be any interest in splitting those up into smaller slide decks? I know the videos are produced in what look like reasonable subdivisions, and 250 slides is a lot.

[jdavcs]

Would there be any interest in splitting those up into smaller slide decks? I know the videos are produced in what look like reasonable subdivisions, and 250 slides is a lot.

That would be up to @jmchilton. I would be +1 on this (and happy to help, of course). I think it might make it easier to add more depth to select topics, when that makes sense (we have great coverage of topics like the api and dependency injection, and not so much on select other areas; one big slide deck doesn't make that too obvious).