When the San Francisco Giants and Detroit Tigers face off in game one of the World Series tonight, it will be the first time two teams from different medical marijuana states meet in the Fall Classic (The Giants and Angels played an intrastate series in ’02). There may be a smattering of Tigers fans in attendance, but unless they’re transplants living in California, they probably won’t be medical marijuana patients. When the series shifts to Detroit for game three, however, patients in California…