[TASK] Turn todos into @todo to find them easier, Part 2

Change-Id: Iedee934b91eb22f9263de60e0f26c34af61222ec
Resolves: #63619
Releases: master
Reviewed-on: http://review.typo3.org/35130
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>