SAK-23473 file with size under threshold should be uploaded fine

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@134462 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-23473 removed an redundant quote character in vm

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@134464 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25265 attach sakai_csrf_token when uploading zip file

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@202613 66ffb92e-73f9-0310-93c1-f5514f145a0a