Any and all causes of action, either at law or in equity, which may now exist, or which may hereafter arise by reason of any act or omission by or on the part of said board or any of its servants, agents or employees, shall be brought and maintained by such claimant or claimants against said board, anything in the statutes of the State of Minnesota to the contrary notwithstanding. And any and all judgments recovered against said board shall be paid out of any moneys in the hands of the city treasurer belonging to the credit of said board the same as other indebtedness is paid.