Refactor translations file in Composer

Description

There is big mess in `app/messages/messages_en.json`.
We need to reorganize it.

Assignee

Unassigned

Reporter

Jakub Niezgoda

Labels

Target Version

future

QA Owner

None

Premium Only

no

Documentation Required

None

Why Blocked?

None

Release Notes

yes

Priority

Low

Epic Link

Priority

Minor
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