Northern Ontario is taking a big step forward to help keep young architects in the north.   That`s because Sudbury`s School of Architecture is now officially open.  It`s the first school of its kind in the north and the first new architect school built in Canada in 45 years.  The 77,000 square foot building has room for 400 students who will learn about architecture in English and French.  The province built the facility for $27-million.