Case F-44/05 RENV: Judgment of the Civil Service Tribunal (Second Chamber) of 23 October 2012 — Strack v Commission (Civil Service — Officials — Referral to the Tribunal following annulment — Waiver of immunity of the servants of an institution in respect of words spoken and documents written in the course of legal proceedings — Appointment to a post of Head of Unit — Rejection of an application — Action for annulment — Unsuccessful candidate’s interest in bringing proceedings — Authority of res judicata — Procedural defect — Balancing of the interests at stake — Action for damages — Non-material damage suffered by reason of an irregularity)