修复 excel 可能出现的 crash 问题
Merge branch 'master' of https://github.com/fex-team/agroup

* 'master' of https://github.com/fex-team/agroup: (22 commits)
  sync file name between file,folder and editor cache data
  update
  add status , user to folder table
  update file update page
  update
  链接后端抓取
  feature: filename change
  update
  refact editor cache logic
  重构消息中心
  add pub sub module
  update
  支持office所有格式转码
  update
  remove delay affect
  add readme.md preview
  update file preview
  消息有单个文件变为多个文件
  update
  update
  ...
删除不需要的 jar 文件