issue#240 user with 'viewhiddensections' permission

[tuanngocnguyen]

Regards issue#240: #240

https://github.com/moodle/moodle/blob/MOODLE_405_STABLE/lib/modinfolib.php#L3164-L3166

 * @property-read bool $uservisible True if this section is available to the given user (for example, if current user
 *    has viewhiddensections capability, they can access the section even if it is not
 *    visible or not available, so this would be true in that case) - obtained dynamically

[gjb2048]

@tuanngocnguyen More complex than that with a logic conflict between:

and:

Plus 'hiddenfromstudents' isn't accurate. Applies to 'any' user without 'moodle/course:viewhiddensections' capability in the given context.