Judgment of the Court (Third Chamber) of 19 January 2006 in Case C-240/03 P: Comunità montana della Valnerina v Commission of the European Communities (Appeal — EAGGF — Withdrawal of financial aid — Article 24 of Regulation (EEC) No 4253/88 — Principle of proportionality — Statement of reasons — Rights of the defence — Cross-appeal — Designation of two persons to be responsible for the execution of a project — Claim on only one of them for repayment of all the aid — Discretionary power of the Commission — Objective limits of the proceedings before the Court of First Instance)