digestType can be a number or a string
- change ds-rdata attribute parser from a regexp based parser to a object based one so that the rdap object mapping can use it to parse the ds-rdata attributes

- implement more of the domain rdap response

- more tests
Merge branch 'upstream-rdap' of github.com:APNIC-net/whois into upstream-rdap

* 'upstream-rdap' of github.com:APNIC-net/whois:
  changing rel to terms-of-service for tnc
  adding in the rel as copyright for the tnc
  backed out of the dead end that was the query messages stuff (dependency hell). put it into the whois.api.whois.domain.rdap namespace. hopefully this route is a tad more fruitful. works for tnc's (ripe flavor). need to work on getting it to use configurable values for the info put into the notices.

Conflicts:
	whois-api/src/main/java/net/ripe/db/whois/api/whois/rdap/RdapObjectMapper.java