Author: Rossiani Wijaya
MDL-30816 choice module: fixed accessibility for responses table and make it easier for screenreader to read it
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ba09f6b84e6daf32e6475fc0cae440e9a673ab7a
http://github.com/moodle/moodle/commit/ba09f6b84e6daf32e6475fc0cae440e9a673ab7a
+ 2.2 en [numberofuserinpercentage,mod_choice]
+ 2.2 en [responsesresultgraphheader,mod_choice]
+ 2.2 en [userchoosethisoption,mod_choice]