Datacage: Added dc:min-number(list) and dc:max-number(list) to extract the numerical minimum/maximum from a list of numbers. Example: dc:min-number(dc:find-all('\d{4}', '1919 1291 1299 3029')) returns 1291

<?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>