[BUGFIX] RTE: Use correct settings

RTE linkhandler properties and classes are now handled correctly.

Change-Id: I943c561e357848b30ae74a3d86062189273b91e5
Releases: master
Resolves: #71248
Reviewed-on: https://review.typo3.org/44736


Tested-by: Renzo Bauen <info@conpassione.ch>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>