(Reuters) -Walmart raised its full-year forecast and reported better-than-expected first-quarter results on Thursday, betting that easing inflation will drive stronger sales of groceries and non-essential merchandise like clothingand electronics. The strong performance by the nation's largest retailer could assuage some investors' fears about ebbing U.S. consumer spending. Average transactions - a proxy for online and store traffic - also rose by a similar amount while shoppers also put in... Read this story