remove useless img
remove useless css
remove useless js like global.js
修正persistentNotifyOps的描述：当前必须设置该字段。
update jkl, add edit entry
Merge pull request #49 from wangtuanjie/feature/update_jkl

update jkl, add edit entry
修正Java-SDK的环境依赖版本。
Merge pull request #50 from BluntBlade/master

修正persistentNotifyOps的描述：当前必须设置该字段。
add changelog page
add a anchor for download page
add a md for changelog page
Merge pull request #51 from SunLn/6318_add_changelog_page

6318 add changelog page
Merge remote-tracking branch 'qiniu/master' into remove_useless_code_from_old_docs_website
remove useless code
changelog.html
update docs.js (zendesk porta-feature -> portal)
Merge pull request #52 from SunLn/remove_useless_code_from_old_docs_website

Remove useless code from old docs website
test webhook
add darwin ver jkl tools
Merge pull request #53 from wangtuanjie/feature/add_darwin

add darwin ver jkl tools