* Initial commit of Sailthru lms changes
* Field mapping changes for Sailthru integration
* Merge fix
* Add users to Sailthru list on registration
* FIx minor code format issues
* Several updates based on code review feedback
* Updates based on recomendations from Sailthru
* Clean up unit tests
* Fix last login
* Updates based on code review feedback
* Updates based on code review feedback
* Fix comment
* Cleanup