By John Revill ZURICH (Reuters) -Makers of chocolate bars and coffee to lawn mowers and industrial robots succeeded in passing on soaring costs to consumers, first-quarter earnings showed on Thursday, allaying fears higher prices could dent demand for their products. Some of Europe’s biggest companies reported first quarter sales increases, with KitKat maker Nestle, Evian water owner Danone and Dulux paint maker Akzo Nobel saying they were able to accomplish the gains while raising their prices. Engineering company ABB and gardening equipment maker Husqvarna also reported strong demand despite…