Git commits in Moodle 3.5.2 by Dan Poltawski

commit 95ee02b25375e6ee5024d0677b006bf64c24ecbb
Author: Dan Poltawski <talktodan@gmail.com>
Date:   Fri, 31 Aug 2018 18:35:12 +0800
Tag:    v3.5.2

MDL-48846 filter: Stop reffering to invalid moodle.org/download/mimetex