The men’s room at Malden City Hall has earned high ratings on a Zagat-style, gay meet-up Web site, prompting city councilors Tuesday to call for the basement lavatories to be closed indefinitely. Mayor Richard Howard, however, overruled the decision Wednesday, and the bathrooms remain open. The Web site "Gay Universe" rates sites all over the U.S. for male-on-male sexual meet-ups, and the Massachusetts section lists some of the most public parks and beaches, prominent malls and department store bathrooms all over the Boston area. In addition to Malden City Hall, an unnamed public park on Fellsway East is named, along...