Note: this new test has been tagged "isolate" and excluded from regular tests
because the locale behavior being tested involves Django internals that must
be handled at initialization and cannot be changed during runtime (i.e. this
new test with PASS when run alone, but FAIL when run with other tests).
A future commit or set of commits should come up with a way to execute all
tests tagged "isolate" in isolated test environments as part of the full test
suite. For now, this test simply does not run until it is run manually.
The frontend library uses an datetime strong format for it's base language (US English)
that is not supported by Python's datetime. This commit adds custom formats to
support the frontend strings.