Author: Tony Butler
MDL-55459 assignfeedback_editpdf: Add linked comments and markers to PDF
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2c153c56499557edd80bd3c076119dc51e5d4b81
http://github.com/moodle/moodle/commit/2c153c56499557edd80bd3c076119dc51e5d4b81
+ 3.3 en [commentindex,assignfeedback_editpdf]
+ 3.3 en [commentlabel,assignfeedback_editpdf]