Comment 3 for bug 1393621

Ok, have gone almost with what I mentioned in original report except that the name of the file in the functions directory is based on the classname field in the external_functions table and therefore the class the file holds.

So we have:
webservices/functions/mahara_user_external.php - for user functions
webservices/functions/mahara_group_external.php - for group functions
webservices/functions/mahara_institution_exteranl.php - for institution functions