Author: Andrew Nicols
MDL-61407 quizaccess: Add null_writer implementations
http://git.moodle.org/gw?p=moodle.git;a=commit;h=09a9b8f1ac85033b77ff209fc87f43c2ebcde84c
http://github.com/moodle/moodle/commit/09a9b8f1ac85033b77ff209fc87f43c2ebcde84c
+ 3.5 en [privacy:metadata,quizaccess_delaybetweenattempts]
+ 3.5 en [privacy:metadata,quizaccess_ipaddress]
+ 3.5 en [privacy:metadata,quizaccess_numattempts]
+ 3.5 en [privacy:metadata,quizaccess_offlineattempts]
+ 3.5 en [privacy:metadata,quizaccess_openclosedate]
+ 3.5 en [privacy:metadata,quizaccess_password]
+ 3.5 en [privacy:metadata,quizaccess_safebrowser]
+ 3.5 en [privacy:metadata,quizaccess_securewindow]
+ 3.5 en [privacy:metadata,quizaccess_timelimit]