description for EMSW
Merge branch 'master' of git.omnilab.sjtu.edu.cn:zhangzhaohui/dwms into zhangbin
solve the register bug
add the District and refactor the code a little
complete the refactoring of District
Merge pull request #3 from zhaohuizhang/zhangbin

pull request from Zhangbin
first time
modify the system_sidebar
Merge branch 'sky' of git.omnilab.sjtu.edu.cn:zhangzhaohui/dwms into zhangbin
update the mysql database
complete the refactoring of production, transport and reception