Chinese newspapers turned their front pages black on Thursday and flags were put at half mast in mourning for the death of former president Jiang Zemin, while well-wishers laid piles of bouquets outside his childhood home. Jiang died in his home city of Shanghai just after noon on Wednesday of leukaemia and multiple organ failure, aged 96. His death has prompted a wave of nostalgia for the relatively more liberal times he oversaw. A date has yet to be set for his funeral. The front page of the ruling Communist Party's official People's Daily devoted its whole front page to…