Author: Tim Hunt
MDL-29427 quiz nav: information items should should have a state tooltip
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5d81093e3ca85ba8a6e634fd06ca5a9aba163b76
http://github.com/moodle/moodle/commit/5d81093e3ca85ba8a6e634fd06ca5a9aba163b76
+ 2.1 en [notyetviewed,mod_quiz]
+ 2.1 en [viewed,mod_quiz]