Adds translations to the syllabus page
Adds translations to the syllabus page

fixes CNVS-17193

Test Plan:
   - Set to a different language
   - Go to the syllabus page
   - The "due by" should be translated.
   - The same should be true of the "to" between dates when you
     are seeing a range.

Change-Id: I65faed464df212ffa05474fe3f2407c5334958c6
Reviewed-on: https://gerrit.instructure.com/47375
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Dan Minkevitch <2591e5f46f28d303f9dc027d475a5c60d8dea17a@instructure.com>
Product-Review: Dan Minkevitch <2591e5f46f28d303f9dc027d475a5c60d8dea17a@instructure.com>
QA-Review: Clare Strong <40d6bb3ed7fef516c73274131d5a837c16de74fd@instructure.com>

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