Fix waterlevel classes and change defaults for them. If to is 0 then we create a class that goes to 9999 If step is 0 then we only have a single step >= 0 The defaults are now from 0, to 2m with a step of 0.5

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