* [Update] update db log info

* [Update] support mysql session

* [update] add db name

* [Update] add mysql-client

 sftp node tree

* support tcp proxy (#72)

* fix selected item display bug

* [Update]add ssh keep-alive

* Fix MFA login http response error

* [update] update new core API (#76)

* fix docker config from env (#77)

* V52 bugfix (#78)

* fix select all item display bug

* fix js bugs

* 修复关闭seesion的bug和移除无效的配置 (#80)

* [Update] add asset load policy config

* modify readme

* [Update] 修改url

* [update]fix selecting asset bugs

* [update]修改websftp的js翻译

* 修改debug信息

* 修改连接复用

* 支持文件夹下载

* fix bugs

* upgrade jquery related files

* add zipMaxSize and zipTmpPath config

* remove debug code

* 优化复用连接代码

* 修改配置, 并移除无效的配置项

* 修复网域连接未释放问题

* 修复语言设置无效的问题

* 修复最后一个命令记录问题 (#85)

* update elfinder

* fix bugs

* add protocol field for session

* version to 1.5.3

* 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

* [update]sftp优化

* 调整sftp结构

* 优化sftp code