[TASK] Streamline button order/group

In order to be consistent, change the button order and styling
(according to the list module).

Resolves: #78199
Releases: master
Change-Id: I44b03a7f6e4e49f397a62d00158083c568ce5cda
Reviewed-on: https://review.typo3.org/50138


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>