THE DEADLY CONFINESWhile the nation wages war against Germany in 1918, utility infielder Mickey Rawlings has been traded to the North Side of Chicago. He's batting a career high (a respectable .274) and the Cubs are in first place. For the first time in a long while Mickey is feeling financially secure enough to buy furniture. That's when his best friend-rookie Willie Kaiser-is shot dead right on the diamond. While the official explanation is 'accidental death from a stray bullet,' Mickey thinks