By James Mackenzie GIGLIO, Italy (Reuters) - Salvage crews lifted the wrecked Costa Concordia cruise liner off a rock shelf on Monday as they worked deep into the night to complete one of the most difficult and expensive maritime salvage operations ever undertaken. The 114,500-ton Concordia has lain half-submerged on its side just off the Italian island of Giglio since it ran aground and sank with the loss of 32 lives on January 13, 2012. ...