Git commits in Moodle 3.3.6 by Tony Butler

commit 3eef55dda4a10d7d6d911ba04ef71cb3ea7cab98
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Fri, 01 Sep 2017 23:54:16 +0800
Tag:    v3.3.6

MDL-59691 assignfeedback_editpdf: Allow comment placement to all edges

commit 8531f802ecd57ebad614c732f2942089fcdf3403
Author: Tony Butler <tonyjbutler@gmail.com>
Date:   Wed, 02 Aug 2017 22:43:47 +0800
Tag:    v3.3.6

MDL-59691 assignfeedback_editpdf: Allow comments to collapse to top-left