Added ticket #14007 contributors to AUTHORS
Merge pull request #2213 from dnerdy/ticket-14007-contributors

Added ticket #14007 contributors to AUTHORS
Minor wording tweaks in tests.
Fixed #21836 -- Improved transaction docs about autocommit mode

Clarified that queries in autocommit mode are committed immediately
only if a transaction has not already been started. Added to the
main transaction docs that Django's TestCase class implicitly wraps
its tests in transactions.
Fixed #21873 -- Removed duplicate import.

Thanks Sephi for the report.
Merge branch 'master' into t17304

* master:
  Fixed #21873 -- Removed duplicate import.
  Fixed #21836 -- Improved transaction docs about autocommit mode
  Added ticket #14007 contributors to AUTHORS