[FOLLOWUP][FEATURE] Report wrong database character set

This adds the Feature ReST-File and fixes to small whitespace issues

Resolves: #74038
Releases: master
Change-Id: I885db774de249c1e9bd9963c1266934884e5c396
Reviewed-on: https://review.typo3.org/47064


Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>
Reviewed-by: Andreas Wolf <andreas.wolf@typo3.org>
Tested-by: Andreas Wolf <andreas.wolf@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>