add policyDao
change int to Integer
change boolean to Boolean
change varient to variant
checkstyle arrangement
just add jiashuo
as the just now
Merge remote-tracking branch 'remoteGit/dev' into dev

Conflicts:
	rdap-webapp/src/main/java/cn/cnnic/rdap/common/util/RestResponseUtil.java
	rdap-webapp/src/main/java/cn/cnnic/rdap/common/util/StringUtil.java
	rdap-webapp/src/main/java/cn/cnnic/rdap/controller/RdapController.java
fix confilict
fix conflict