Case T-50/05: Judgment of the General Court of 19 March 2010 — Evropaïki Dynamiki v Commission (Public service contracts — Community tendering procedure — Provision of computer services relating to telematic systems to control the movement of products subject to excise duty — Rejection of a tenderer’s bid — Action for annulment — Consortium of tenderers — Admissibility — Principles of equal treatment of tenderers and transparency — Award criteria — Principles of sound administration and diligence — Obligation to state the reasons on which the decision is based — Manifest error of assessment)