Minor cleanup and fixes

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/model/user/userunitdata.go

@@ -8,3 +8,7 @@ type UserUnitData struct {
 	UserID           int   `xorm:"user_id"`
 	InsertDate       int64 `xorm:"insert_date"`
 }
+
+func (UserUnitData) TableName() string {
+	return "user_unit_data"
+}