Git commits in Moodle 3.6.3 by Neill Magill

commit 3e14b40724b30f365886602053c16126fba276c8
Author: Neill Magill <neill.magill@nottingham.ac.uk>
Date:   Thu, 09 Aug 2018 17:28:21 +0800
Tag:    v3.6.3

MDL-63103 filebrowser: Speed up finding activities with files