Git commits in Moodle 2.8.4 by Neill Magill

commit 401697c3978c7c23f5450892aaabfe6d3ae840a2
Author: Neill Magill <neill.magill@nottingham.ac.uk>
Date:   Mon, 19 Jan 2015 23:45:44 +0800
Tag:    v2.8.4

MDL-48865 core_block: Show regions with only hidden blocks when editing