Neither this Act nor anything herein contained shall be construed as a restriction or limitation upon any powers which the State authority might otherwise have under any laws of this State, but shall be construed as cumulative of any such powers. No proceedings, referendum, notice or approval shall be required for the creation of the State authority or the issuance of any bonds or any instrument as security therefor, except as herein provided, any other law to the contrary notwithstanding; provided, that nothing herein shall be construed to deprive the State and its governmental subdivisions of their respective police powers over properties of the State authority, or to impair any power thereover of any official or agency of the State and its governmental subdivisions which may be otherwise provided by law.