Author: Shamim Rezaie
MDL-73383 atto_collapse: Do not announce the list of added buttons
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3094b2cf38f596ce9a93dbc6d62587847ac4db14
http://github.com/moodle/moodle/commit/3094b2cf38f596ce9a93dbc6d62587847ac4db14
+ 4.0 en [youareonsecondrow,atto_collapse]