Showy entertainment venues, museums and new housing blocks have replaced many of the shipyards that once lined Glasgow's River Clyde. Long gone are the days when the area was an industrial powerhouse producing around a fifth of the world's ships - now Scotland's largest city promotes itself instead as a financial and commercial hub, soon to host the 2014 Commonwealth Games. But although billions of pounds of investment have given Glasgow a shining new waterfront and growth in sectors like financial services…