fix bugs: may enter the editor twice; fail to enter the editor using special urls; will not stop when pressing the stop button; can not input any string.
specify the version of the node module 'mongojs'
auto-update socket.io.js in client (/static/...) when 'make deploy'
支持新版Mongodbjs。固定Socket.io版本。
support more versions of the socket.io module
Merge branch 'master' of https://github.com/yuzeming/popush
Use newer mongojs: remove mongojs uploaded, and merge some changes from yuzeming@gmail.com.
Merge pull request #33 from gdh1995/master

合并了俞则明的工作
begin to print an exception's stack-trace in DEBUG mode; some small improvement
Merge pull request #34 from gdh1995/master

后台发生异常时支持打印的错误堆栈(DEBUG模式)