DUBLIN (Reuters) - Irish consumer sentiment hit a six-month high in January, buoyed by the reduced risk of a disorderly British exit from the European Union, but still sharply lower than it was a year ago, a survey showed on Wednesday.Ireland has remained the European Union's fastest growing economy during three years of Brexit talks, but consumer confidence faltered when it seemed that its nearest neighbour could leave the bloc without agreeing to a withdrawal deal.The KBC Bank consumer..