This exports PrintTree function which allow to set Role Based Access Control, Create our own requests statistics...etc

Update ini.go: change the key to lowercase when set a new key for ini configer

Fix warnings raised by gometalinter and gosimple

Fixes warnings and errors raised by gometalinter and gosimple.

Fixed InsertOrUpdate bug

Update

Fix routing bug for splat matching

Fix the following template reference

Beego 运行过程中动态增减定时任务时，now的时间需要更新，否则等待时间会不正确

Fix ini parsing error for multiple users on one machine.

If there were multiple users working on one machine, it's common that
"/tmp/beego" will be owned by one of them, and the others won't be able
to access to it. So, it's better to add an "id-like" postfix to the
temporary directory.