* 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