Author: Rossiani Wijaya
MDL-27922 lesson mod: fixed string for activity link
http://git.moodle.org/gw?p=moodle.git;a=commit;h=560f549593eef6e9d736f76a000017177f6a488d
http://github.com/moodle/moodle/commit/560f549593eef6e9d736f76a000017177f6a488d
+ 2.1 en [activitylinkname,mod_lesson]