Author: meirzamoodle
MDL-78096 tiny_media: Implement external image URL
http://git.moodle.org/gw?p=moodle.git;a=commit;h=087b286a166d504d67f379df8b003a41dbe5a23c
http://github.com/moodle/moodle/commit/087b286a166d504d67f379df8b003a41dbe5a23c
+ 4.4 en [imageurlrequired,tiny_media]