Git commits in Moodle 3.9.4 by Peter Burnett

commit e9961085eb08d755dd8597683f91088f61d5aad6
Author: Peter Burnett <peterburnett@catalyst-au.net>
Date:   Tue, 10 Nov 2020 09:06:17 +0800
Tag:    v3.9.4

MDL-70160 cache: plugin_functions checks for function_exists()


commit d8bfd5b7477f23c260d2e3846af1baaff5ca6b2a
Author: Peter Burnett <peterburnett@catalyst-au.net>
Date:   Tue, 03 Nov 2020 08:59:21 +0800
Tag:    v3.9.4

MDL-70106 cache: Set icon localstorage cache to use theme localisation