GREG-5: Adding some basic endpoints for consents, sponsors, and organizational units

See merge request !14

GREG-5: Add post role for person

See merge request !10

GREG-5: Adding verified filter for persons

See merge request !12

greg.tests: migrate to pytest test runner

See merge request !11

Duplicated code is not a problem in itself.

Fixes: GREG-14

It becomes quite hard not to do this in Django, because a lot of
the imports share similar names to local symbol names.

Fixes: GREG-14

Fixes: GREG-14

Fixes: GREG-14

Fixes: GREG-14

This is a first stab at converting the tests for the Person model
to pytest.  It is more than likely that we will want to create
shared fixtures for these in the future.

Fixes: GREG-14

Creates a new module namespace greg.tests.api that for now contains
a single test, test_person.

Fixes: GREG-14

Literal translation of greg/tests/test_api_person.py into pytest
style.  This could certainly be improved.

Fixes: GREG-14

The faker module spams the logs from test runs with needless messages
such as these:

	INFO:faker.factory:Provider `faker.providers.address` has been localized to `en_US`.
	INFO:faker.factory:Provider `faker.providers.automotive` has been localized to `en_US`.
	WARNING:faker.factory:Specified locale `en_US` is not available for provider `faker.providers.bank`. Locale reset to `en_GB` for this provider.

By lowering the test logging verbosity of this module in pytest's conftests.py,
we silence these.

Fixes: GREG-14

The Django configuration expects a static directory to be present
on the file system, otherwise the tests will output a warning.  This
adds an empty directory using the clever git trick of ignoring
everything within the directory except the .gitignore file itself.

This silences a warning during the test run.

Fixes: GREG-14

django.conf.urls.url has been deprecated in favour of django.urls.re_path,
which has matching behaviour.

This silences two warnings during the test run.

Fixes: GREG-14

ugettext_lazy has been deprecated in favour of gettext_lazy.
This silences a deprecation warning outputted during test runs.

Fixes: GREG-14

Automatic commit from "poetry add --dev pytest-django" based on 5d52c80d.

Fixes: GREG-14

Pytest understands unittest-styled tests, so there is no immediate
need to update the test files themselves to a pytest idiomatic
syntax.

Fixes: GREG-14

Removing constraint on PersonRole

See merge request !7

build: introduce pylint, pyproject.toml, and formatting lints

See merge request !8

PersonTestData.setUp() calls super().setUp(), but this is only
available on GregAPITestCase.  This only works at runtime because
PersonTestData and GregAPITestCase is composed together with
multi-inheritance as part of PersonAPITestCase.

This change is obviously not ideal, but we will change it soon when
introducing pytest anyway.  This is just to get the lints passing.

Fixes: GREG-16

As reported by pylint.

Fixes: GREG-16

As reported by pylint.

Fixes: GREG-16

All reported by pylint.

Fixes: GREG-16

Fixes: GREG-16

Fixes: GREG-16

Some of the lint checks disabled in this patch should possibly be
re-enabled, but this is what is necessary to get the lints passing
on the current state of the source code without too much trouble.

Fixes: GREG-16