Amherstburg council approved Monday night a proposal in principle from the Valente Development Corporation to develop a new townhall within the former General Amherst High School. The development of site as a whole would include a new town hall, residential living, retail stores and restaurants, gym, two new parks and two designated parking lots.  35,000 square feet would be set aside for the town hall, including building a multi-purpose council chambers with a civic theatre, which developers…