Author: Davo Smith
MDL-33946 mod_label - create label from text dragged and dropped into the course
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5efae6823dd48799a891f25c5ddabc79872add55
http://github.com/moodle/moodle/commit/5efae6823dd48799a891f25c5ddabc79872add55
+ 2.5 en [dnduploadlabeltext,mod_label]