Former D.C. Police Chief Charles Ramsey has been named police commissioner of Philadelphia by Mayor-elect Michael Nutter, reports the Associated Press. Ramsey came to D.C. in 1998 after serving for 31 years in his hometown of Chicago, and became Washington’s longest-serving police chief in more than three decades, serving as top cop in the District until the end of 2006, when he was replaced by incoming Mayor Adrian Fenty. Since we’ve had a little bit…