The 'edit_instance_validation()' method checks for existing meta enrolment instances.
The fix replaces DB queries in a loop for each course with a single query for all courses.
Also, a new testing method 'test_edit_instance_validation_with_existing_courses()'
was added to /enrol/meta/tests/plugin_test.php to test if the new implementation
returns an error in case of trying to save the already linked courses in the 'customint1' field.
This is based on code from the enrol cohort plugin and
on work from Willy Lee available at https://github.com/willylee/moodle-local_metasync
AMOS BEGIN
CPY [addgroup,enrol_cohort],[addgroup,enrol_meta]
AMOS END
Fix various incorrect urls
Fix incorrect phpdocs and other minor code style issues
Fix missing/incorrect strings
AMOS BEGIN
MOV [eventblogassociationcreated, core_blog],[eventblogassociationadded, core_blog]
AMOS END
Marina Glancy