Also made the course request category more robust, as breakage would
incur if $CFG->defaultrequestcategory didn't exist as a category.
merged from MOODLE_19_STABLE
and admins can approve or reject pending courses.
Also, contains the ability to restrict activity modules on a per course basic. Strict config options:
enable restricting modules at ALL (for all courses, no courses, requested courses), what to do by default for newly created courses
as well as what modules to enable for above category by default.
This feature was created for the aim of building a community side to moodle - for institutes that have strict courses and enrolments, allowing normal users to request interest courses is a good feature,
but some modules may be redundant (assignment, lesson, quiz etc)
Please test!