[TYPO3-shop] API change in TYPO3 4.0 RC1 makes tt_products backend unusable

[Franz Holzinger]

> 
> it seems that this bug caused by the change of the TYPO3 backend's page
> module API will still be in the official TYPO3 4.0 .
> 
not an API change, but a too optimistic vision that this patch for a
more comfortable page module would come into TYPO3 4.0  :-(