Update translations
Merge pull request #2376 from techAPJ/update-translations

Update translations
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Revert "Revert "BUGFIX: improve error messages for invalid API keys""

This reverts commit e9afe28586cd887b92fa86c52db78d543a70e433.
BUGFIX: missed a key rename
BUGFIX: API spec not enabling CSRF
FIX: compare Time with nil error in dev env. Remove nils when looking for max mtime.