Version history: review past versions of an answer (ESG)

Answer versions already existed in ESG data collection, but their content wasn't visible in the history. You can now review any past version: in a question's History card, click "View" to open the "Version history" dialog and read the answer, justification and evidence exactly as they were; the latest is labelled "Current version". Coming soon: restore a previous version in one click, with the current answer kept in the history.