Git commits in Moodle 3.6.4 by Marina Glancy

commit 90667b82e8b37ad6470dfc57a76e67ab3ef31b71
Author: Marina Glancy <marina@moodle.com>
Date:   Wed, 24 Apr 2019 17:34:13 +0800
Tag:    v3.6.4

MDL-64151 forms: select element without selection


commit dd971a0a45f04c43b196878ffc9e2887d2b57dda
Author: Marina Glancy <marina@moodle.com>
Date:   Wed, 10 Apr 2019 19:57:50 +0800
Tag:    v3.6.4

MDL-64151 form: autocomplete element remove last choice