[TASK] Replace sprite icons in ImportExport::addRelations

Replaces IconUtility::getSpriteIcon call for the icons
"status-status-checked" and "status-dialog-warning".

Resolves: #69708
Releases: master
Change-Id: I7a9395b50d904fd79ceed36f7748f7895e0606d4
Reviewed-on: http://review.typo3.org/43230


Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>