LONDON (Reuters) - Britain's royal family rounded on a columnist on Friday who had branded Prince Harry "a national disgrace," lazing his way through a year off in Australia and Africa and touching up girls in nightclubs. The office of Harry's father, heir-to-the-throne Prince Charles, sent a furious letter to the Daily Express saying Carol Sarler's attack on his son was "unfair" and "nonsense." "I understand that columnists are paid to express their opinions vigorously and with style, but the piece entitled 'Spoiled and lazy Harry is one of a kind"' was grossly inaccurate and ill-informed," Charles' new communications secretary...