[FEATURE] Recursive starting point/storage pid via TypoScript

Change-Id: I47840230c1aa094c13bafb1b94c3f09ecadd6a33
Resolves: #6944
Releases: 6.0, 6.1
Reviewed-on: https://review.typo3.org/2636
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind