SAK-23812 Peer Review feature for Assignments
Changing logic for finding "lowestAssignedAssessor" to use a snake list,
to prevent being left with only the submitor's id and the same submission (making
uneven distributions of submission reviews)


git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@130492 66ffb92e-73f9-0310-93c1-f5514f145a0a