Merge pull request #17 from tanwh/master

[mod]增加财务总监，修改相应逻辑
Merge pull request #18 from tanwh/master

[mod]财务总监在付款审核中付款
[mod]修正不能编辑BUG
Merge pull request #6 from JohnCny/master

[mod]财务总监在付款审核中付款