The body of the TGI Friday's manager--whose was found earlier this week by an employee inside the restaurant, making this San Mateo's first homicide since 2006--was identified as Douglas Castello, 36, "a mild-mannered guy with an infectious laugh." Reports claim that he was bludgeoned to death by a "blunt force type object." He was reportedly heading down the road toward marriage just before his death, "shopping for a promise ring in two weeks and......