fix bug: sql error.
Merge pull request #471 from forumbyr/master

fix bug: sql error.
modify nameserver self-link
Merge pull request #472 from yqz1016/modifyBug

modify nameserver self-link
self-link add http:// or https:// and  add urlEncode
Merge remote-tracking branch 'rdapmaster/dev' into modifyBug
fix bug:arpa search should contain networks; ipv4 validate error.
Merge pull request #473 from yqz1016/modifyBug

self-link add http:// or https:// and  add urlEncode
Merge pull request #21 from cnnic/dev

merge from cnnic
Merge remote-tracking branch 'origin/master'
Merge pull request #474 from forumbyr/master

fix bug
modify properties
Merge pull request #477 from yqz1016/modifyBug

modify properties
Merge remote-tracking branch 'rdapmaster/dev' into dev
refactor: add validator.
refactor: devide controller.
Merge pull request #481 from forumbyr/master

refactor: devide controller.
Merge remote-tracking branch 'rdapmaster/dev' into dev

Conflicts:
	rdap-webapp/src/main/java/org/restfulwhois/rdap/core/controller/CommonController.java
	rdap-webapp/src/main/java/org/restfulwhois/rdap/core/controller/DnrController.java