bug修改，考试作业学生端统计页面统计柱取消背景，获取统计的url，自动释放list报错
Merge remote-tracking branch 'origin/Release' into luleyan
统计也判断用户身份是家长还是学生
更新错题本
Merge branch 'Release' of Y:\reps\Edu into Release
Merge branch 'Release' of //192.168.2.211/sharefile/reps/Edu into Release

Conflicts:
	EDEngine/Resources/AppEntry.lua
增加跟改update server位置的功能
Merge branch 'Release' of Y:\reps\Edu into Release