The Nassau County Legislature unanimously approved a $229 million bid by Forest City Ratner to restore and update the Nassau Coliseum on Monday. Naussau County voters turned down a plan to borrow $400 million to build a new arena two years ago and this deal is intended to save taxpayers the expense of the renovation, but critics wonder if the Coliseum can be successful without the New York Islanders, as the team will move to the Barclays Center after the 2014-15 hockey season. UMBC economics professor Dennis Coates tells The New York Times that he doubts the arena can generate the …