Author: David Mudrák
MDL-80160 admin: Fix site admins selector UI if the list is hardcoded
If the list of site admins was defined in the config.php, the UI to
select / modify admins never worked. But there was no indication of the
reason which was unexpected and confusing.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2948abf1e348d4c48ee8dced81d881d8df956535
http://github.com/moodle/moodle/commit/2948abf1e348d4c48ee8dced81d881d8df956535
+ 4.2 en [siteadministratorsconfigphp,core_role]