CLC-4153 - Updated incorrect SIS User ID change hash example
CLC-4153 - Replaced CampusOracle::Queries.get_all_active_people_attributes wth .get_all_active_people_uids, returning only UIDs now
CLC-4153 - Refactored Canvas::MaintainAllUsers to only add new users
CLC-4153 - Renamed Canvas::MaintainAllUsers as Canvas:AddNewUsers. Renamed #sync_all_active_users as #sync_new_active_users
CLC-4153 - Renamed cronjob script and rake task to reflect ONLY addition of new users.
CLC-4153 - Converted Canvas::MaintainUsers to use instance variables for SIS User Import CSV file, and known UID array
CLC-4153 - Updated references from 'sis_id_changes' to 'sis_user_id_changes' for clarity
CLC-4153 - Updated Canvas::SiteMembershipsMaintainer to receive sis_user_id_changes hash and use new values when they apply to cached Canvas enrollments
CLC-4153 - Removed unnecessary commented stubs
Merge pull request #3045 from redconfetti/CLC-4153-missing-sis-user-id

CLC-4153 - Prevent sis_user_id conflicts in new bCourses integration approach