user session update

[freefcw]

after permission change, submitted problem, submit, solved problem

each request should have a best way refresh the data

[dotkrnl]

说人话...

[freefcw]

那么晚你居然没有睡觉。我说的是session里面保存了当前用户的数据，没有及时的从数据库更新，当用户提交了代码以后，submit之类的都不会变，嗯，我还发现了几个bug