Update app to use latest ways of doing things in rails

[mikevallano]

Read through the changelogs, etc. and manually update things, for example:

• hotwire:
  • https://dev.to/thomasvanholder/how-to-upgrade-migrate-turbolinks-to-hotwire-3e7
  • https://eagerworks.com/blog/import-maps-in-rails-7
• import maps

[mikevallano]

12/8 status:

Everything is working locally, though there are some failing feature tests.

I deployed the branch to production, but the problems are:

• a browser console error that newz.js is not found.
• jquery does not seem to be working because the bootstrap nav dropdowns are not working.

Next steps:

• clean up code
• clean up diffs in css files so that they only reflect actual changes, and not prettier
• look at the failing tests and fix easy solutions, and tag or otherwise skip others
• make a list of things to fix or refactor for next steps
• address problems in production
• deploy and test
• fix up any bugs
• merge and deploy!