BLTI-230

Improve the LTI 2.0 unit tests.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk/basiclti-docs/resources/docs/sakai-api-test@126557 66ffb92e-73f9-0310-93c1-f5514f145a0a
BLTI-230

Upgrade this to handle the data for the new and improved LTI 1.1 
certification from IMS.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk/basiclti-docs/resources/docs/sakai-api-test@126618 66ffb92e-73f9-0310-93c1-f5514f145a0a
BLTI-230

Add a CSS file.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk/basiclti-docs/resources/docs/sakai-api-test@126621 66ffb92e-73f9-0310-93c1-f5514f145a0a
BLTI-230

Add randomness to session key in unit test to avoid reuse.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk/basiclti-docs/resources/docs/sakai-api-test@126622 66ffb92e-73f9-0310-93c1-f5514f145a0a