Grain’s Hangover Helper Burger will be on the Trolley menu. Photo by Matt Urban   In December, restaurateur Jim O’Donoghue got a call from commercial real estate guru Joe Latina. A Trolley Square restaurant was now available, Latina said. Did O’Donoghue want it? “Absolutely,” said O’Donoghue, who owns Grain Craft Bar + Kitchen restaurants in Delaware and Pennsylvania with friend Lee Mikles. …