Git commits in Moodle 3.0.5 by Simey Lameze

commit 1e8bbc604015bda1dc7d0d3321b07f139536ec9e
Author: Simey Lameze <simey@moodle.com>
Date:   Thu, 07 Jul 2016 09:32:47 +0800
Tag:    v3.0.5

MDL-54734 core_user: do not cache dummy user records