Command `user-online` prints the hour instead of the day of month in all of the displayed dates. It should be `Y-m-d` instead of `Y-m-h` ([line 39](https://github.com/tmuras/moosh/blob/7343810293dec0d351d04d8d87a69aba88aebd05/Moosh/Command/Moodle39/User/UserOnline.php#L39)) and `Y-m-s` ([line 56](https://github.com/tmuras/moosh/blob/7343810293dec0d351d04d8d87a69aba88aebd05/Moosh/Command/Moodle39/User/UserOnline.php#L56)).
