The name of the popular pizzeria in Jamaica Plain is the Same Old Place, but events Sunday night were shockingly out of the ordinary: A gang- affiliated gun-and-knife fight inside the shop took three lives and unsettled a neighborhood not accustomed to such violence. In May, 14-year-old honors student Jaewon Martin was gunned down while playing at a basketball court at the Bromley Heath Housing Development off Centre Street, an innocent victim caught in gang crossfire.\n