Case T-44/14: Judgment of the General Court of 19 April 2016 — Costantini and Others v Commission (Law governing the institutions — European citizens’ initiative — Social policy — Service of general economic interest — Article 352 TFEU — Refusal of registration — Manifest lack of powers of the Commission — Article 4(2)(b) of Regulation (EU) No 211/2011 — Principle of good administration — Obligation to state reasons)