[WIP] Optimize the space usage in modeler

This patch tries to reduce the modeler view to the basic
information needed to get an idea of the model.

Releases: 6.2
Resolves: #58453
Resolves: #58560

Change-Id: I649365407da654eb5922a614258862b9ba0fbd99
Reviewed-on: https://review.typo3.org/29840
Reviewed-by: Nico de Haen
Tested-by: Nico de Haen