Author: Huong Nguyen
MDL-66539 atto_link: Non-intuitive action for atto link button
http://git.moodle.org/gw?p=moodle.git;a=commit;h=6372d61f715bcf432efc425659b6c341db218bb2
http://github.com/moodle/moodle/commit/6372d61f715bcf432efc425659b6c341db218bb2
+ 4.0 en [texttodisplay,atto_link]