Case C-298/05: Judgment of the Court (First Chamber) of 6 December 2007 (reference for a preliminary ruling from the Finanzgericht Münster (Germany)) — Columbus Container Services BVBA & Co. v Finanzamt Bielefeld-Innenstadt (Articles 43 EC and 56 EC — Taxes on revenue and wealth — Conditions for taxing the profits of an establishment situated in another Member State — Double taxation convention — Methods of exempting or offsetting tax)