By Madeline Chambers and Riham Alkousaa BERLIN (Reuters) – A 29-year-old man drove into a crowd of people in Berlin on Wednesday, killing a teacher and injuring 14 of her students, as his car twice veered onto a pavement in a popular shopping district, officials said. Police identified the driver as a German-Armenian man, whose vehicle eventually crashed into a shop window. He was detained by bystanders and handed over to the authorities. It was unclear whether it was an accident or a deliberate act in a street near the war-ravaged Kaiser Wilhelm Memorial Church, one of the German capital’s be…