Fix test crudely

Remove comment

DjangoModelPermissions should perform auth check before accessing the view's queryset

Fix doc for ErrorDetail

Fix test name

Unexpected result when passing empty body to RequestFactory

Fix default value handling for dotted sources

Fix pyc/pycache excludes from manifest

I definitely see files from `__pycache__` as well as `.pyc` files in the package. Fixed according to https://www.reddit.com/r/Python/comments/40s8qw/simplify_your_manifestin_commands and https://github.com/django/django/pull/5817

Update link to drf-writable-nested repository in third-party serializers

~api-clients documentation: installation code fix

Fix doc Response data attribute description

Adding a more explicit error message when a view does have a get_queryset method but it returned nothing

Update 2-requests-and-responses.md: consistency

Made it consistent with Part I. Catched it when commiting the code into my local tutorial repo.

Further clarifying the message when get_queryset returns None to include the class name that was called

Adding a more explicit error message when a view does have a get_queryset method but it returned nothing

Release notes etc for 3.6.4

For the last minute #5346

docs/link.html: fix/remove undefined template var "schema"

Fix introspection of list field in schema