Merge pull request #13 from bythink/master

20130707
Merge pull request #14 from bythink/master

20130709
Merge pull request #15 from bythink/master

20130711
Merge pull request #16 from bythink/master

20130713
Merge pull request #17 from bythink/master

20130713-2
短消息功能，数据库在那个trello里面

ajax删除部分还没有搞定，
Merge pull request #12 from tylergong/master

短消息功能