Dependabot 770 (#816)
Dependabot 770 (#816)

* Bump django-sendfile2 from 0.5.1 to 0.6.0 in /requirements

Bumps [django-sendfile2](https://github.com/moggers87/django-sendfile2) from 0.5.1 to 0.6.0.
- [Release notes](https://github.com/moggers87/django-sendfile2/releases)
- [Changelog](https://github.com/moggers87/django-sendfile2/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/moggers87/django-sendfile2/compare/v0.5.1...v0.6.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

* Added SENDFILE_ROOT in settings required for django-sendfile2 0.6.0

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
Co-authored-by: dzejkob <messer>
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