Simplifies a bunch of test code by converting it to use our handy testUtils module.
None of the app code is change, just test code. And none of the test cases are modified in any meaningful way - this just simplifies the setup/cleanup significantly.
* feat: Make "Pages & Resources" course apps into plugins
* feat: move ora_settings
* feat: move proctoring
* feat: move progress
* feat: move teams
* feat: move wiki
* feat: move Xpert settings
* fix: add webpack.prod.config.js
* fix: clean up unused parts of package.json files
* feat: Add an error message when displaying a Course App Plugin fails
* chore: fix various eslint warnings
* chore: fix jest tests
* fix: error preventing "npm ci" from working
* feat: better tests for <SettingsComponent>
* chore: move xpert_unit_summary into same dir as other plugins
* fix: eslint-import-resolver-webpack is a dev dependency
* chore: move learning_assistant to be a plugin too
* feat: for compatibility, install 2U plugins by default
* fix: bug with learning_assistant package.json
