Reuters – Online gambling company Bwin.Party said this year’s soccer World Cup would help it to return to growth after problems in Greece and a shift away from riskier markets cut earnings in 2013. Bwin.Party is concentrating on fewer markets where regulations are more clear cut and is expanding in the United States as gambling rules are relaxed there. Rival Betfair, another of a cluster of online gambling companies that have grown up over the past decade, is pursuing a similar strategy. “Having streamlined the shape and size of our business we now have the foundations to return our business...