Author: Jayesh Anandani
MDL-39054 quiz statistics: move hard-coded text to lang file
http://git.moodle.org/gw?p=moodle.git;a=commit;h=620233b8fb4fd9c81512372a3701557850dbc3ae
http://github.com/moodle/moodle/commit/620233b8fb4fd9c81512372a3701557850dbc3ae
+ 2.5 en [partofquestion,quiz_statistics]