[TASK] Change misleading texts to "lowlevel" modules

Resolves: #18486
Releases: master
Change-Id: Iba2514001570428e50eb55a75cee793ff7a409fb
Reviewed-on: http://review.typo3.org/40751


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Xavier Perseguers <xavier@typo3.org>
Tested-by: Xavier Perseguers <xavier@typo3.org>