Refactoring innerObjectHasPermission method
fix checkstyle problem
edit properties
change 'nameServers' to 'nameservers', in domain object
Merge pull request #445 from xuyao/dev

fix bug search domain using distinct
Merge pull request #444 from yqz1016/dev

change 'nameServers' to 'nameservers', in domain object
fix domain search by nsLdhName using unicode nsLdhName
change private method into public medthod for DomainUtil.isLdh
return 400