add to extra text if include deleted objects is set

test plan
 - run outcomes report with include deleted objects
 - report ui should show it was set

Change-Id: I0108b59a3a7f04a3831938e51a56c40602e924b2
Reviewed-on: https://gerrit.instructure.com/28403
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Cody Cutrer <cody@instructure.com>
QA-Review: Rob Orton <rob@instructure.com>
Product-Review: Rob Orton <rob@instructure.com>