SAK-27938

Fix the problem if the incoming Result JSON is a double and not a string.
Also propery check the LTI version (i.e. use eauals() instead of ==)
Also clean up some print statements.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@313942 66ffb92e-73f9-0310-93c1-f5514f145a0a