Merge pull request #445 from sfu/feature-sis-user-names

Add full & sortable name fields to SIS User Import

Change-Id: Ib8617572802ca69913b422d22301299ab75c211f
Reviewed-on: https://gerrit.instructure.com/34548
Reviewed-by: Cody Cutrer <cody@instructure.com>
QA-Review: August Thornton <august@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>