Author: Shamim Rezaie
MDL-81859 mod_assign: Add a link to grader on the submissions page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f108d1ee2b6383da457389d27caf8e8f4afe3f5f
http://github.com/moodle/moodle/commit/f108d1ee2b6383da457389d27caf8e8f4afe3f5f
+ 4.5 en [viewgrader,mod_assign]