journey: properly handle origin/destination and route_{start,end}

		is_cancelled => $is_cancelled,

		train        => $train,

		operator     => $operator,

		route_end    => $destination,

		destination  => $destination,

		route_end    => $stops[-1]{name},

		messages     => \@messages,

		route        => \@stops,

	};

	if ( $journey->{stbStop} ) {

		if ( $hafas->{arrivals} ) {

			$ref->{origin} = $ref->{route_end};

		}

		else {

			$ref->{destination} = $ref->{route_end};

		}

	}

	bless( $ref, $obj );