[TASK] Install tool: Improve 'clear tables' view

Refactor the 'clear tables' view of the install tool:
* Main content is loaded on opening the card via ajax
* Tables with 0 rows are no longer shown
* Refresh view after 'clear this table' ajax action has been clicked

Change-Id: I8608e6561eaf9d0ae06da8e27b25c5ce879a5b62
Resolves: #82136
Related: #76084
Releases: master
Reviewed-on: https://review.typo3.org/53743


Tested-by: TYPO3com <no-reply@typo3.com>
Tested-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Jan Stockfisch <jan.stockfisch@googlemail.com>
Tested-by: Jan Stockfisch <jan.stockfisch@googlemail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>