Labs/panto watch i18n

Describe the MR

Use i18n for all user-facing strings in Vue views and components.

Mostly here as a way to ease work on wording. No i18n work planned as of yet.

Why was this MR needed?

Extra-care points?

Doesn't handle error messages from the API layer.

Does this MR meet the acceptance criteria?

• Documentation created/updated
• CHANGELOG updated
• Unit Tests added/updated

What are the relevant issue numbers?

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