Merge pull request #180 from forumbyr/master

fix bug: 1.network in arpa domain should not contains entities 2.query param should not be truncated before more '?' 3.entity search paging
Merge pull request #182 from forumbyr/master

1.fix bug:nameserver in domain should not contain entities.
Merge pull request #183 from forumbyr/master

fix bug:add pref to address
Merge pull request #185 from wade1012/dev

Dev Wade
update design doc.
update sql and build file.
checkstyle arrange.
Merge commit 'ddea6321ceaaa50a4db08af25eab2b422092b521' into dev