Author: Dan Marsden
CHOICE MDL-24102 fix lang string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f51d388c783140768fe68e45ec214a4a889b1a17
http://github.com/moodle/moodle/commit/f51d388c783140768fe68e45ec214a4a889b1a17
+ 2.0 en [chooseaction,mod_choice]