[TASK] Install Tool: Use classes for AJAX calls as selectors

This patch changes selectors for some AJAX calls from id to class

Resolves: #80545
Releases: master
Change-Id: Ic3805c180779a2b5b2f49993f6064555f26d1938
Reviewed-on: https://review.typo3.org/52232


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>