wagon order: support wings with same destination, but different route

%       if ($wagon->is_locomotive or $wagon->is_powercar) {

%         $bg = 'background-color: #cccccc;';

%       }

%       if ($has_multi_dest and $wagon->train_no ne $train_no) {

%       if ($wagon->train_no ne $train_no) {

%         $extra_class .= ' nondestwagon';

%       }

        <div class="wagon <%= $extra_class %>" style="