FORT KENT, Maine — Northern Maine Medical Center in Fort Kent has secured space at a former Kmart building in Madawaska for a future medical mall, according to the property’s owner. The building is a large part of Madawaska’s midtown plaza space, which is undergoing a major revitalization that also includes the ongoing construction of a new 30,000-square-foot Fish River Rural Health facility. The Fish River project is not connected to the medica…