[FEATURE] Option to disable validation of stored records

Adds two new configuration options to Install Tool which are used when
saving records using the DataHandler:

* disable the validation of records after saving them
* if validating, make a strict value comparison ('' !== 0) instead of
  the default loose comparison ('' == 0)

Fixes: #79438
Releases: master
Change-Id: I01dfae57b046db00a531dfdfc386e43fe32329e4
Reviewed-on: https://review.typo3.org/51405


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Claus Due <claus@phpmind.net>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Frans Saris <franssaris@gmail.com>
Tested-by: Frans Saris <franssaris@gmail.com>