Author: Rossiani Wijaya
MDL-34570 accessibility compliance for question: edit string label
http://git.moodle.org/gw?p=moodle.git;a=commit;h=735280b159f77332f2170b2da66a5c6ed497ea58
http://github.com/moodle/moodle/commit/735280b159f77332f2170b2da66a5c6ed497ea58
+ 2.2 en [selectansweroption,qformat_xhtml]
+ 2.2 en [distributionoption,qtype_calculated]
+ 2.2 en [lengthoption,qtype_calculated]
+ 2.2 en [selectanswerformat,qtype_essay]
+ 2.2 en [selectananswer,qtype_match]