CHICAGO (Reuters) – The man convicted of murdering Academy Award winner Jennifer Hudson's mother, brother and young nephew was sentenced to life in prison on Tuesday, with the judge in the case deriding him as a man with "the heart of an arctic night." William Balfour had been convicted in May of breaking into the Hudson family home and fatally shooting Hudson's mother Darnell Donerson, 57, her brother Jason Hudson, 29, and her 7-year-old nephew Julian King. …