'Move To' string translation

fixes CNVS-12090

test plan:
 - the following strings should be displayed as 'Move To'
   - assignments.assignment_group_list_item.move
   - assignments.assignment_list_item.move
 - with draft state on
 - on the assignments index page
 - it should still display 'Move To...' for assignments and AGs

Change-Id: I0fa5408aebc2f0685a08b3d8e4f33f9d818ed549
Reviewed-on: https://gerrit.instructure.com/32521
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Simon Williams <simon@instructure.com>
QA-Review: Caleb Guanzon <cguanzon@instructure.com>
Product-Review: Cameron Sutter <csutter@instructure.com>