Author: Marina Glancy
MDL-57616 label: allow to drag and drop video/audio files
http://git.moodle.org/gw?p=moodle.git;a=commit;h=6c61222fbb647724472a55060e103a52d45830d2
http://github.com/moodle/moodle/commit/6c61222fbb647724472a55060e103a52d45830d2
+ 3.2 en [dnduploadlabel,mod_label]