change srgb title

fixes CNVS-13001

test plan:
  - go to srgb, the page title (in your browser tab)
   should say "Gradebook: Individual View"

Change-Id: I985f855057536e18a39fe43872c358ca1e092951
Reviewed-on: https://gerrit.instructure.com/34749
Reviewed-by: Liz Abinante <labinante@instructure.com>
Product-Review: Simon Williams <simon@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Anna Koalenz <akoalenz@instructure.com>