Human rights — Admissibility of authors’ communication to Human Rights Committee — Consideration of merits — Right to stand for election — Obligation on general election candidates to declare their communities — “Way of life” criterion — Paragraph 3(1) of Mauritius Constitution — National Assembly Election Regulations 1968 — Whether mandatory requirement to declare community affiliation based on objective, reasonable criteria which were neither arbitrary nor discriminatory — International Covenant on Civil and Political Rights, 1966, Article 25 — Whether State Party violating its obligations under Article 25(b) of Covenant — Effective remedy