1、超级管理员课表预览bug修复

2、连堂课条件判断逻辑调整
3、vip课教师不做异常签到、签退判断
4、课程调整，如果调整时间大于当前时间，则清空之前的签到信息
5、VIP课学员复学增加时间限制

mec-biz/src/main/java/com/ym/mec/biz/service/impl/VipGroupServiceImpl.java

@@ -1383,6 +1383,10 @@ public class VipGroupServiceImpl extends BaseServiceImpl<Long, VipGroup> impleme
 
         BigDecimal surplusCourseFee = courseScheduleStudentPaymentDao.countSurplusCourseFee(classGroup.getId(), studentId);
 
+		if(Objects.isNull(surplusCourseFee)){
+			surplusCourseFee=new BigDecimal(0);
+		}
+
 		Map<String, Object> pauseInfos = new HashMap<>();
 		//学生剩余课时
         List<StudentCourseInfoDto> userSurplusCourseInfoByGroup = courseScheduleDao.findUserSurplusCourseInfoByGroup(GroupType.VIP, vipGroupId.toString(), studentId);