Not so fast. In a premature Dewey beats Truman moment, boston.com today posted an online map of Massachusetts voting results declaring Attorney General Martha Coakley the winner of today’s special U.S. Senate election. Whoops. Globe jumps the gun in online map goof - BostonHerald.com It was a test on a tool and it meant nothing. I don’t know how these things happen,” said the executive assistant to the editor of boston.com. The editor, David Beard, has yet to return a call to the Herald.