Author: Tim Hunt
MDL-29428 quiz navigation panel should use 'This page' (accessibility improvement)
http://git.moodle.org/gw?p=moodle.git;a=commit;h=572a96edb02f0835830655dec5c19b71de4b55a0
http://github.com/moodle/moodle/commit/572a96edb02f0835830655dec5c19b71de4b55a0
+ 2.2 en [onthispage,mod_quiz]