mild cleanup of whoisrdapservice
Merged WhoisService into WhoisRdapService (now separate from WhoisRestService).
Merge commit '9ed00145584c1ba14478c21f0f4aaf69990f05b8' into upstream-rdap

* commit '9ed00145584c1ba14478c21f0f4aaf69990f05b8':
  Merged WhoisService into WhoisRdapService (now separate from WhoisRestService).
  mild cleanup of whoisrdapservice
added endAsInetAddress to IpInterval and implementations
implementation of Ip objectMapping

Conflicts:
	whois-api/src/main/java/net/ripe/db/whois/api/whois/rdap/RdapObjectMapper.java
added TODO regarding parentHandle - optional or not?