They shall have such powers as are granted to library boards by the general laws of this state, including the power to receive donations for library purposes, and to make requisite contracts or agreements in connection with such donations. They may prosecute any action in the name of said board for the breach of any contract, express or implied, touching the management of the library, and also for any injury, trespass, damage or nuisance done, caused, or procured to be done, and also for the enforcement of any fines or penalties imposed, but no member of said board shall be interested in any contract made by the board.