test plan:
* turn on the sis import refactor feature flag
* importing a small sis import (default 50 rows or less)
should show the number of successfully imported rows
for each type on the sis import page
closes #CORE-1634
Change-Id: Ifdbe98c8bc9252552e7280d3df0764503a388396
Reviewed-on: https://gerrit.instructure.com/157791
Tested-by: Jenkins
Reviewed-by: Rob Orton <rob@instructure.com>
Product-Review: Rob Orton <rob@instructure.com>
QA-Review: Rob Orton <rob@instructure.com>