LONDON (Reuters) - A teacher from **rthern England who bought equipment for use by Islamic State (IS) jihadists in Syria was convicted on Monday of terrorism offences, police said. Jamshed Javeed, a 30-year-old science teacher at a secondary high school in Bolton, pleaded guilty at a court in London to assisting others to commit acts of terrorism and preparing to travel to Syria himself, the police said in a statement. Security officials say some 500 Britons, most with Muslim immigrant backgrounds, are believed to be fighting in Iraq and Syria, though the true number could be much higher. ...