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