Adds usage rights modal to new files

closes CNVS-15865
closes CNVS-15867

Test Plan:
  - Go to new files
  - Use the gear menu to open the usage rights modal
  - Add usage rights to a file
  - Open a folder the same way a message about it being a folder
    should show.
  - Select multiple files and it should show that there are
    multiple files selected.
  - Select multiple files with multiple folders and each folder
    should be listed
  - Select multiple files with different usage rights and a
    warning should show about that.
  - Be thankful that you have food to eat.

Change-Id: Ibb8b4a4fbc4e73cfcb921100590654e1fcc83e3b
Reviewed-on: https://gerrit.instructure.com/44823
Reviewed-by: Dan Minkevitch <dan@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
QA-Review: Anna Koalenz <akoalenz@instructure.com>
Product-Review: Cosme Salazar <cosme@instructure.com>