Git commits in Moodle 3.7.3 by Johan Dobbelstein

commit cf889e4fbdbd207ddced0d2899001dd49a16403f
Author: Johan Dobbelstein <johan.dobbelstein@script.univ-paris-diderot.fr>
Date:   Mon, 02 Sep 2019 23:30:46 +0800
Tag:    v3.7.3

MDL-66582 auth: Fix empty auth_logo in CAS/Shibboleth auth plugins