don't attempt to load modules with the same class more than once. This fixes issues with sites that override included modules
don't attempt to load modules with the same class more than once. This fixes issues with sites that override included modules

wesley1001/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web