Joined Cases T-178/10, T-263/10 and T-265/10: Judgment of the General Court of 21 June 2012 — Spain v Commission (Operational programmes of the Cohesion Fund and of the ERDF managed by Spain — Request for interim payment — Evidence suggesting significant deficiency in functioning of management and control systems — Measures interrupting the period for payment — Action for annulment — Admissibility — Audit strategy — Legal certainty — Legitimate expectations — Proportionality)