SAK-24180

More cleanup of formerly dollar-sign prefixed properties.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@134448 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-24180

Add missing error checking due to code refactor.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@134450 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-24180

More cleanup for conformace tests.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@134451 66ffb92e-73f9-0310-93c1-f5514f145a0a