V52 bugfix

[Update] update ssh server package version

* 修改配置, 并移除无效的配置项

* 优化连接复用引用计数代码

* fix select all item display bug

* fix bug

* support tcp proxy (#72)

* fix selected item display bug

* [Update]add ssh keep-alive

* Fix MFA login http response error

[Update] 修改docker file

Dev

* fix bugs

* fix ip addr bug

* fix addr bugs

* fix download many files bug

* fix upload chunk file bugs

* support folder cut and paste

* update go.sum file

* 修复web文件管理按钮和页面背景重叠

* 优化命令过滤匹配

* make ssh reuse connection configurable

* fix bug; user auth login type

* fix addr bugs

* fix download many files bug

fix user auth bug

Dev