Update pylint-django to 2.0

[pyup-bot]

This PR updates pylint-django from 0.11 to 2.0.

Changelog

2.0

--------------------------

- Requires pylint >= 2.0 which doesn't support Python 2 anymore!
- Add modelform-uses-unicode check to flag dangerous use of the exclude
attribute in ModelForm.Meta (Federico Bond).

0.11.1

--------------------------------------------------------------

- Enable test case for ``urlpatterns`` variable which was previously disabled
- Disable ``unused-argument`` message for the ``request`` argument passed to
view functions. Fix
`155 <https://github.com/PyCQA/pylint-django/issues/155>`__
- Add transformations for ``model_utils`` managers instead of special-casing them.
Fix
`160 <https://github.com/PyCQA/pylint-django/issues/160>`__

Links

• PyPI: https://pypi.org/project/pylint-django
• Changelog: https://pyup.io/changelogs/pylint-django/
• Repo: https://github.com/PyCQA/pylint-django

[pyup-bot]

Closing this in favor of #28