Applying coding standards rules.

Each type of element group can now be a set of ldap group by specifying multiple patterns to search codes into.

Applying some code style rules.

Prevent user from changing group and role settings when users are already enrolled thanks to this method.
Make method type check when retrieving method based on stored type.

Correcting minor coding errors.

Adding new setting to select which system roles to assign to users on authentication, regarding LDAP course creator filter.

Adding enrol method existence check before sync, in case method has been deleted in between times.

Using confirm box to run forced method synchronization.
Code rewriting to deal with Moodle coding style.
Correcting some langstrings.

Updating incorrect async tasks definition file.

Doing some code cleaning.

Doing some code refactoring.

Refactoring LDAP users extraction method to speed up process.
Changing the behaviour of "force enrolment" : the action unenrols now enroled users not in LDAP group and not only adds missing enroments.
Adding capabilities to allow teachers or prevent them from forcing method enrolment.

Adding group enrolment feature.
Enhancing backup and restore feature.

Adding setting to inhibit all Apogee enrolment methods, preventing them from synchronizing users' enrolments.

Some code clean-up and typos correction.

Code is refactored : class enrol_ubxsshib_ldapGroupProvider encapsulates all the business logic about ldap search & extract operations.
Deprecated add_to_log calls have been removed.
Grades are being recovered through the call to the core enrol_user function.