issue 452 fixed JcloudsLocation override of groupId causes DnsNameValidator to fail in jclouds
"brooklyn-fullusername-uids" on those clouds which don't have short limits, added unit test
fixed import
Merge pull request #454 from digitalsanctum/issue-452

fixed JcloudsLocation override of groupId causes DnsNameValidator to fail in jclouds
Adds javadoc for feeds
consistent javadoc usage of @code
deprecate unused AbstractCombiningEnricher