REPUBLIC v. EXECUTIVE CHAIRMAN, KUMASI CITY COUNCIL; EX PARTE GYIMAH AND OTHERS State proceedings—Quo warranto—Application for—When proper to grant leave—Decision of High Court declaring right of Councillors of Kumasi City Council to elect one of their members as chairman—Application by councillors to issue writ of quo warranto directed against executive chairman of the council—Executive chairman to show by what authority he exercised the office of executive chairman—Executive chairman re-appointed by President under section 8A of the Local Administration Act, 1971 (Act 359), as amended by S.M.C.D. 219—Both enactments continued in force by Constitution, 1979—Whether application tantamount to impugning the validity of the Acts conferring powers on the President—Whether High Court proper forum for the action—Local Administration Act, 1971 (Act 359), s. 8A— Local Government (Amendment) Decree, 1979 (S.M.C.D. 219)—Constitution, 1979, arts. 118 and 2 (1).