Changes necessary for running on Django 3.2#21

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peterkuma wants to merge 4 commits intozmathew:masterfrom peterkuma:master

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Commits on Jun 2, 2021

Changes necessary for running on Django 3.2
peterkuma
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Commits on Jun 6, 2021

Fix bug when looking up related field
peterkuma
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Commits on Jun 21, 2021

Fix saving of translatable fields in Django 3.2
peterkuma
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Commits on Mar 18, 2022

managers.py: Fix related to Python 3.9
peterkuma
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