Case C-415/11: Judgment of the Court (First Chamber) of 14 March 2013 (request for a preliminary ruling from the Juzgado de lo Mercantil No 3 de Barcelona — Spain) — Mohamed Aziz v Caixa d’Estalvis de Catalunya, Tarragona i Manresa (Catalunyacaixa) (Directive 93/13/EEC — Consumer contracts — Mortgage loan agreement — Mortgage enforcement proceedings — Powers of the court hearing the declaratory proceedings — Unfair terms — Assessment criteria)