Author: Damyon Wiese
MDL-52954 assign: Behat fixes because the assign grading ui has changed
http://git.moodle.org/gw?p=moodle.git;a=commit;h=821ab1bf9b8a6747ce31af6bfb554f6139df23b1
http://github.com/moodle/moodle/commit/821ab1bf9b8a6747ce31af6bfb554f6139df23b1
+ 3.1 en [teamname,mod_assign]