Author: Jean-Michel Vedrine
MDL-40286 mod_lesson: non-editing teacher should see Grade analysis
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b69d512a906f9caf31a3a4f27c131454da50fc5c
http://github.com/moodle/moodle/commit/b69d512a906f9caf31a3a4f27c131454da50fc5c
+ 2.9 en [lesson:viewreports,mod_lesson]