Remove getUser Hack. This caused the datacage not to show old_calculations which was probably the reason for this. But this also broke the range filtering (before the recent datacage changes which made user id obsolete for datacage filtering)

<?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>