Fixed #22497 -- Highlighted difference between field and class deconstruction.

Thanks nliberg for the suggestion.
Fix a typo in logging.txt
Merge pull request #2613 from azalea/patch-2

Fix a typo in logging.txt
Fixed #22254 -- Noted the requirement of calling django.setup() when running

Thanks Peter Landry for the report.
Revert "Fixed #15179 -- middlewares not applied for test client login()"

This reverts commit 4fdd51b73240bf9c8d9472fcc45df699f0714755.

See the ticket for concerns with this implementation; it will be revisited.
Added dates to release notes of today's release.
Added stub release notes for 1.6.5.