WILKES-BARRE, Pa. - A federal judge upheld the 28-year prison sentence of a disgraced Pennsylvania judge who locked up thousands of juvenile offenders while he was taking kickbacks from the owner and builder of for-profit detention centers, prosecutors announced Wednesday.Mark Ciavarella, a former Luzerne County juvenile court judge, had been seeking a lighter sentence after three of the 12 counts of his 2011 conviction were overturned on appeal.U.S.