Assignments Due Date Calendars: provide translators better context
Assignments Due Date Calendars: provide translators better context

The translators had a hard time translating the word "to" into spanish,
so we switch it to "until" to make it simpler.  In my opinion, it sounds
better this way anyway.

Fixes CNVS-21286

Test Plan:

    None necessary

Change-Id: I633ab33d7d466fdc8cab78701d03bbbab9fcedb2
Reviewed-on: https://gerrit.instructure.com/56686
Tested-by: Jenkins
Reviewed-by: John Corrigan <3d73713d0cc718326e4fd7c06c64e067ad6e2270@instructure.com>
QA-Review: Benjamin Porter <fdd60f2e3d506934848b3d0fff79c55f544a2d47@instructure.com>
Product-Review: Benjamin Porter <fdd60f2e3d506934848b3d0fff79c55f544a2d47@instructure.com>

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