Fix Waterlevel description for issue1404 There might be a case for the wq_single description instead of getValueFromWQ but this works for a single W value and multiple W values and was the code formerly used for PDF export.

<?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>