Bridget Ann Kelly, texting, with Governor Chris Christie and Michelle Brown at Seaside Park fire, September 12, 2013

NEWARK — Bridget Anne Kelly and Bill Baroni — central figures in the Bridgegate scandal that has dogged the Christie Administration — pleaded not guilty Monday to charges that they conspired to create traffic jams in Fort Lee on the first day of the 2013 school year. Kelly, a former Christie deputy chief of staff and…