Revert "[BUGFIX] Replace the table definition manipulation by signals"

This reverts commit 2d6e8deae30794afb1967c38857f49b10060f38d.
Revert "test tmaroschik/TYPO3-Travis-Integration patch"

This reverts commit 4fdf507aaaab5e533d8b39badb11e69d9dffe6f7.