Case T-643/16: Judgment of the General Court of 10 April 2019 — Gamaa Islamya Égypte v Council (Common foreign and security policy — Specific restrictive measures directed against certain persons and entities with a view to combating terrorism — Freezing of funds — Whether an authority of a third State can be classified as a competent authority within the meaning of Common Position 2001/931/CFSP — Factual basis of the decisions to freeze funds — Obligation to state reasons — Authentication of Council acts)