SAM-2310: Samigo throws log warning when publishing a quiz

git-svn-id: https://source.sakaiproject.org/svn/sam/branches/sakai-10.x@308212 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAM-2319: NumberFormatException for Item Analysis and Export

git-svn-id: https://source.sakaiproject.org/svn/sam/branches/sakai-10.x@308213 66ffb92e-73f9-0310-93c1-f5514f145a0a