Move the configuration to EXT:impexp.

Resolves: #77941
Releases: master
Change-Id: I1e87ba5eb1f9abf52abcd7f2e345ced9093c2a27
Reviewed-on: https://review.typo3.org/49935


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>