BLTI-261

When a LTI Tool Placement is deleted using the Admin UI from the !admin site, removing the 
page from the site was broken.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@127984 66ffb92e-73f9-0310-93c1-f5514f145a0a
BLTI-259

Remove the mapping keys in the properties files.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@127985 66ffb92e-73f9-0310-93c1-f5514f145a0a