Splitted up facets for porosity and density into two facets: a toplayer and a sublayer facet for each. BedQualityState will now create facets based on the calculation result. flys-artifacts/trunk@5464 c6561f87-3c4e-4783-a992-168aeb5c3f6f

<?xml version="1.0" encoding="UTF-8" ?>
<datacage>
    <user>SA</user>
    <password/>
    <driver>org.h2.Driver</driver>
    <url>jdbc:h2:${artifacts.config.dir}/../h2/datacage</url>
</datacage>