BERLIN (Reuters) - Germany’s current account surplus remained the world’s largest last year despite trade tensions, the Ifo economic institute said on Monday, in an estimate likely to renew criticism of Chancellor Angela Merkel’s fiscal policies. The Ifo calculations, reported exclusively by Reuters ahead of publication by the economic institute, put Germany’s current account surplus — which measures the flow of goods, services and investments — at some $293 billion in 2019. It is the fourth successive year that Germany’s current account surplus has been the world’s largest, with Japan’s the next biggest at $194 billion, according to Ifo calculations....