POCONO MANOR, Pa. — The Philadelphia Police Department will retain its statewide accreditation after a panel ruled Tuesday that a new city law barring officers from stopping motorists for minor violations does not prevent the department from enforcing state law, a key requirement of accreditation. The professional stamp of approval had been in jeopardy since the spring, when officials with the Pennsylvania Law Enforcement Accreditation Commission (PLEAC) said they believed the new measure, known as the Driving Equality law, could have prevented the Police Department and its 6,000 officers from…