Author: Damyon Wiese
MDL-60008 assignfeedback_editpdf: Show warnings
When not all files are available in the online pdf, display a warning to graders
that some files must be downloaded.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=86c577093ba26854dd14b50dfeb9faccd4fbb46f
http://github.com/moodle/moodle/commit/86c577093ba26854dd14b50dfeb9faccd4fbb46f
+ 3.7 en [partialwarning,assignfeedback_editpdf]