LONDON (Reuters) - Two men were found guilty on Wednesday of plotting to murder and rob British Grammy Award winning singer Joss Stone because they were angered by her links to the British royal family. Junior Bradshaw, 32, and Kevin Liverpool, 35, planned to behead the singer before throwing her body in a river near her rural home in southwest England, prosecutors said. The pair had a deep hatred for Stone because she had performed at a charity event organized by Princes William and Harry and she attended the wedding of William and the Duchess of Cambridge, formerly Kate Middleton. ...