Git commits in Moodle 3.10.4 by Juan Leyva

commit 5e29bd67e67275ffc27ceacca9d2e45632cf91dd
Author: Juan Leyva <juanleyvadelgado@gmail.com>
Date:   Wed, 05 May 2021 15:59:02 +0800
Tag:    v3.10.4

MDL-71513 mobile: Fix last access visibility


commit 6c14348b413896f34c8d46e3620a28e9b74d27b4
Author: Juan Leyva <juanleyvadelgado@gmail.com>
Date:   Wed, 31 Mar 2021 23:49:58 +0800
Tag:    v3.10.4

MDL-70863 mod_forum: Allow NULL in timecreated