David Webb, an activist investor who sparred with the rich and powerful of Hong Kong in campaigns for greater financial transparency and regulation, died on Tuesday in a hospital there. He was 60. 曾与香港权贵就提高金融透明度和加强监管展开过多次交锋的维权投资人大卫·韦伯(David Webb)于周二在当地医院去世，终年60岁。…