Friends and acquaintances expressed shock and disbelief Friday at allegations that City Councilwoman Stacey Jo Murphy led a double life -- do-gooder civic leader and cocaine abuser who hung out at a bar with known gangsters. Murphy's arrest after police found drugs and guns at her Lima Street home grew out of a lengthy investigation into the notorious Vineland Boys street gang, which authorities blame for a long list of crimes, including the killing of Burbank police Officer Matthew Pavelka. Across Burbank, those who know Murphy, 47, were having trouble making the allegations jibe with their image of a successful...