CLC-4486 - Fixed reference to Course Provisioning application

https://jira.ets.berkeley.edu/jira/browse/CLC-4486

After update of External Applications API end-point served by CalCentral, the custom Canvas Javascript needed to be updated to look for the 'Course Provisioning for Users' inside of the 'globalTools' object.

Also updated conditional check for LTI ID of eGrades Export tool to check for presence of externalToolsHash and externalToolsHash.officialCourseTools contained within response.