Finished comment frontend functionality - [merged]

[myriath]

Merges 54-comment-handling-frontend -> frontend-dev

• Comments can be added
• Comments can be edited by the owner or moderators / admins / devs
• Comments can be deleted by the owner or moderators / admins / devs

Waiting for backend to test, but preliminary frontend tests show everything working right

[myriath]

changed target branch from main to frontend-dev

[myriath]

approved this merge request

[myriath]

mentioned in commit 3281dc2177a8f181b3a81d1c0bfeee43a8da11aa