Document that we should also offer sha256 checksums for packages

Changed comments in en_GB and en_AU formats files replacing 'pm' with
'p.m.' to match what is actually output.

This reverts commit a8521a2c.

Thanks to Trac alias nessita for the report.

Thanks kwist for the report and the initial patch.

Thanks to Trac user synasius and to Ola Sitarska for helping in
identifying the issue and helping with the test case.

Fixed #23364. Thanks Markush2010 for the report.

This change is needed for upcoming changes where settings might be
grouped in a parent dictionary.
Thanks Tim Graham for the review.

Thanks to Petr Glotov for spotting this.

refs #23323.

Undocumented functions don't need to be mentioned.

Thanks blueyed for the report and Tim Graham for the review.

d562527a rename the db to using in the wrong signal.

Thanks Maik Hoepfel for the report.

Thanks to Trac alias flakfizer for the report.

Also adjusted the pre-release process to prevent future omissions.

Refs #20739. Thanks Raphaël Hertzog for the report and the initial
patch.

Thanks to Trac alias Markush2010 and ross for the detailed reports.