Permanent Court of International Justice — Jurisdiction of — Optional Clause of Article 36 of the Statute — Limitation ratione temporis — Meaning of the Words “in any disputes which may arise after the ratification of the present declaration with regard to situations or facts subsequent to such ratification” — Situation Extending beyond the Date of Ratification — Alleged Unlawful Acts Leading to that Situation and Preceding the Ratification — Alleged Continued Denial of Justice Subsequent to Ratification.