move completion requirement text under module item title

fixes 12030

We are just moving where completion requirements are displayed.

Test Plan

As a Teacher and Student
When I go to the modules page
And I have module items with completion requirements
Then I should see those requirements listed under the title of the module
item

As a Teacher and Student
When I go to the modules page
And I have module item without a completion requirement
When I add a completion requirement via the edit button
Then I should see the completion requirement dynamically be added under
then title of the module item it's for

Change-Id: Iad565d37cc156014572d15597ae70e6bdb9fc297
Reviewed-on: https://gerrit.instructure.com/33042
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Bracken Mosbacker <bracken@instructure.com>
QA-Review: Matt Fairbourn <mfairbourn@instructure.com>
Product-Review: Sterling Cobb <sterling@instructure.com>