The directors shall have control over the management of all district affairs, shall make all contracts pertaining thereto, and shall employ all necessary employés for the proper conduct and operation of such district, including engineers, bookkeepers and such other assistants and such laborers as may be required, at such compensation as they may determine, and may require bonds of any employés in any amount they may determine. They may employ attorneys to represent such district in the preparation of any contract or the conduct of any proceedings in or out of court, and to be the legal adviser of the directors, on such terms and for such fees as may be agreed upon by them.