Case T-461/17: Judgment of the General Court of 6 February 2019 — TN v ENISA (Civil service — Members of the temporary staff — Recruitment — Notice of vacancy — Head of Unit post — Inclusion on the reserve list — Acceptance of the offer of employment — Withdrawal of the offer of employment — Conditions of employment — Character references — Article 12 of the CEOS — Manifest error of assessment — Processing of personal data — Right to be heard — Liability)