A UN internet body has asked for copies of Harrow Council's anti-bullying mousemat after a young person from the London borough impressed delegates at the International Youth Advisory Congress on internet safety and security, with the borough's work on keeping young people safe online.   But while the Harrow mousemats are on their way to the UN headquarters in New York, Harrow Council is also giving away the computer mousemats closer to home. The mats - each emblazoned with the 10 commandments of...