Merge branch 'master' of github.com:didi/AgileTC

feature:1.支持左侧目录移动;2.支持excel用例模板下载

bugfixz:导入xmind路径问题适配

Merge pull request #121 from yimfeng/master

修复带有图片xmind导入问题

Merge pull request #120 from yimfeng/master

修复未授权任意文件写入漏洞

Merge pull request #107 from gitxiaofeng/master

undo缺陷修复

Merge pull request #97 from gitxiaofeng/master

feature:历史版本功能查看

Merge pull request #91 from gitxiaofeng/master

feature:新增权限功能