This act may be cited as the "Standard Travel Pay and Allowance Act of 1949." It is the express intention of this act that the provisions hereof shall supersede and control the language of any statute heretofore enacted relating to the allowance of requests for reimbursement for travel and/or subsistence, including, but without limitation, statutes which provide for the payment of actual and necessary expenses to any officer, agent, employee, clerk, board or commission of the state; and it is further intended that the provisions of this act, and regulations issued hereunder, shall apply to and govern all acts authorizing the payment for travel and/or subsistence which may be enacted hereafter unless the same shall be expressly exempted from the terms of this act. Such acts shall be construed as being subject to the provisions of this act unless an express exemption shall be set forth in such subsequent act.