By Tassilo Hummel and Mimosa Spencer PARIS -France's LVMH reported a 1% rise in third quarter sales on Tuesday, helped by improved demand in China, as the luxury goods industry grapples with a prolonged slump. It was the first quarter of slight growth this year for the world's largest luxury goods group, which is seen as a sector bellwether with operations spanning fashion, alcohol and retail. Trends in Asia excluding Japan, a market dominated by China, showed "noticeable" improvement nine months into t ...