Neither this article nor anything herein contained shall be construed as a restriction or limitation upon any powers which a county might otherwise have under any laws of this state, but shall be construed as alternative or additional; and this article shall not be construed as requiring an election on issuance of the bonds by the voters of a county prior to the issuance of bonds hereunder by the county commission and same shall not be construed as requiring any proceeding under any law or laws, other than that which is required by this article.