(issue1620) Print the real official Q value instead of the first The assumption Q=Q becomes false if there are more then one waterlevels to be exported and only one of them has an official value.

<?xml version="1.0" encoding="UTF-8" ?>
<rest-server>
    <!--  The port which the ArtifactDatabase (ArtifactServer) will bind to. -->
    <port>8181</port>
    <listen>localhost</listen>
</rest-server>