PRESS FOR A MACHINE FOR MANUFACTURING PULP, PAPER, BOARD OR PAPERBOARD, PRESS UNIT THEREFOR, ELASTIC BODY THEREFOR; CALENDER, NAMELY, CALENDERING MACHINE FOR TREATMENT OF A MATERIAL WEB, EQUIPMENT THEREFOR, NAMELY, PRESS UNIT, ELASTIC BODY; SUPPORT UNIT FOR A MACHINE FOR MANUFACTURING PULP, PAPER, BOARD OR PAPERBOARD, ELASTIC SUPPORT BODY THEREFOR