Change artifact database v param to be type TEXT This is neccessary for large theme lists for example in the map. The 256 chars limit could easily be overtaken. I am using this for quite some time now and the upcoming version appears to be a good place to test this.

<?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>