Boynton Beach residents are continuing their fight to preserve a nearly 10-acre forest along city and county lines, pushing back against a developer's proposal to build 72 townhomes near their neighborhood.The land sits near Quentin Avenue and Nickels Blvd., where a boundary line separates two adjoining parcels home to gopher tortoises, grey foxes and other wildlife. Residents say the two parcels together represent some of the last remaining gre…