Author: Tim Hunt
MDL-28507 fix bad lang string uses, and remove two obsolete strings.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=35ddcfb85410f729d7fb10e080510d188ed5bb88
http://github.com/moodle/moodle/commit/35ddcfb85410f729d7fb10e080510d188ed5bb88
- 2.2 en [attemptprogress,quiz_overview]
- 2.2 en [qprogress,quiz_overview]