Git commits in Moodle 2.5.5 by Ruslan Kabalin

commit c86faa37b0b5fe12b20db6cd0964043241326b40
Author: Ruslan Kabalin <r.kabalin@lancaster.ac.uk>
Date:   Wed, 15 Jan 2014 00:12:00 +0800
Tag:    v2.5.5

MDL-43693: assignment: Fix JS error on grading page.