Case T-228/18: Judgment of the General Court of 16 May 2019 — Transtec v Commission (Public service contracts — Tender procedure — Framework contract for the provision of services — Services to third countries benefiting from external aid — Rejection of a tenderer’s bid and award of the contract to other tenderers — Allegations of grave professional misconduct against a tenderer — No final judgment or final administrative decision establishing grave professional misconduct — Conditions for referral to the panel referred to in Article 108 of the Financial Regulation — Abnormally low tenders — Duty to state reasons — Taking into account of a letter sent by the awarding authority after the action had been brought — Right to an effective remedy — Standstill period for bringing an action against the award decision — Equal treatment — Principle of non-discrimination — Articles 105a, 106, 108, 113 and 118 of the Financial Regulation — Non-contractual liability)