Remove overflow: hidden from #wrapper-container
Remove overflow: hidden from #wrapper-container

It looks like the reason it was added is no longer present. This
allows for the side bar to scroll when its too big

Fixes CNVS-15888

Test Plan:

- Create 15+ assignments in a course with impending due dates (within a week)
- Publish these assignments
- As a student, view the to do list on the dashboard.
- Click 'view more' link is clicked
- you should now be able to see all of them

Change-Id: If6be938a29723c875114188c1178fa96bf59a96c
Reviewed-on: https://gerrit.instructure.com/42216
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Chris Hart <b82b40b84a2f06957ec9caf1768340bd6b929cc4@instructure.com>
Reviewed-by: Colleen Palmer <387ba1943871e60965e6b44638a2f2e1ab9b8469@instructure.com>
QA-Review: Steven Shepherd <e794458448443812fb2685675aab3bbd1a3891bc@instructure.com>
Product-Review: Brad Horrocks <7b5c5d1f2eba6c540b8e53f17d87a9bd7dbf604b@instructure.com>

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