Remove all unused files in the codebase and refactor i18n

[andrewtavis]

Contributor checklist

• This pull request is on a separate branch and not the main branch
• I have run the tests for the backend and frontend depending on what's needed for my changes as described in the testing section of the contributing guide

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Description

Redoing the work in #1921 from the most recent state of the code. All unused files have been removed and the i18n key-value pairs have been refactored with i18n-check.

Related issue

• Closes Audit of frontend components to remove unneeded ones #1691

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[github-actions]

Thank you for the pull request! ❤️

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[github-actions]

Maintainer Checklist

The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

• Tests for changes have been written and the TypeScript, pytest and formatting workflows within the PR checks do not indicate new errors in the files changed

• The Playwright end to end and Zap penetration tests have been ran and are passing (if necessary)

• The changelog has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[andrewtavis]

@nicki182, @aasimsyed: I'll be bringing this in as we have the same coverage with the e2e tests as we did before. Review request is just an FYI to the both of you 😊 We've worked on the original #1921 together. This PR mirrors that one based on the current version of main and also makes use of a few of the i18n keys from the create pages within the machines for creating entities.

Thank you both for the support to get this finished up! 🎉