Author: Tony Butler
MDL-55459 assignfeedback_editpdf: Make comments collapsible in editor
http://git.moodle.org/gw?p=moodle.git;a=commit;h=23990a0a8041ad1a00bcc141517337d092a54e57
http://github.com/moodle/moodle/commit/23990a0a8041ad1a00bcc141517337d092a54e57
+ 3.3 en [expcolcomments,assignfeedback_editpdf]