This reverts commit d895fc9a since the
test is problematic as described in the ticket.

A JSON Content-Type can contain further content, like charset for example.

This reverts commit 4cffa9a1.

Thanks Andrew Brown for the test case.

Thanks Aymeric Augustin and Carl Meyer.

Thanks Tim Graham for the review.

TemporaryDirectory tries to delete the directory that was already removed.

Add aliases from resolved querysets to the parent query's external
aliases to prevent those aliases from being quoted.

Thanks to Vasily Stepanov for the report and Tim Graham for the review.

Thanks to Aymeric Augustin, Harry Percival, and Tim Graham.