By Eliana Raszewski BUENOS AIRES (Reuters) -Pop star Liam Payne, who shot to global fame with boy band One Direction, died at the age of 31 after falling from a third-floor hotel room balcony in Buenos Aires, Argentina, triggering an outpouring of tributes from fans around the world. Before the fall, a hotel employee at the CasaSur hotel in the leafy neighborhood of Palermo called emergency services, asking for help with a guest who he […]