Issue: AFAIK there is no way no control access to /course/info.php and /course/search.php

Scenario: we have courses and we want them to be visible only for enrolled users (for confidentiality protection). We've hidden their category to avoid users navigate there, but there is still a way to find them via /course/info.php and /course/search.php and see the name and summary, even for guest users (we've seen that if the access is not disabled in the robots.txt even search engines can index those courses)

Proposal A: Add new category capabilities to avoid guest users and unenroled users seen courses in a hidden category (at least via /course/info.php and /course/search.php, maybe somewhere else too)
Proposal B: Add new course capabilities to avoid guest users and unenroled users seen the course even if it is visible (at least via /course/info.php and /course/search.php, maybe somewhere else too)