VATICAN CITY (Reuters) - Cardinals around the world began informal contacts to discuss who should next lead the Church through a period of major crisis and the Vatican said it planned a big send-off for Pope Benedict before he becomes the first pontiff in centuries to resign. At a Tuesday news conference on how the pope plans to spend the next two weeks before he steps out of the limelight, the Vatican also disclosed that the 85-year-old Benedict has been wearing a pacemaker since before he was elected pope in 2005. ...