Refactor to use new article type classes

[schang1146]

Thank you for your contribution to the ClintonCAT repo.
Before submitting this PR, please make sure:

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• The target of this PR is the main branch.
• No commits are missing from forked base branch (e.g. modified main branch instead of dev)
• You have squashed commits that might be considered: 'noisy' or partial, e.g. not candidates for cherry picking
• All test pass, run npm test
• The code is formatted, run npm run format
• You have updated or added test cases, as/if required
• You have installed and tried out the plugin in a supported browser

Chromium (Chrome, Brave, etc.):
I think something broke on the main branch. Tested functionality on both heads and the extension wouldn't do any notification and had errors in the console. Not fixing in this PR but might look at that next.

Firefox:

[arr0ganc3s]

Looks good, thank you. Running on chromium seems good on my end, no errors. Please squash commits next time.