The Fluid namespace "core" is now available globally, making
it obsolete to register the namespace manually in each file
any core viewhelper is necessary.

This is also a precursor for integrating Frontend Editing content
editable ViewHelpers in all places of TYPO3 Frontend when
fluid templates are in use.

Resolves: #79817
Releases: master
Change-Id: I7691107fa7c02e71b848cd8d0bb0eecdae5a8171
Reviewed-on: https://review.typo3.org/51688


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Mattias Nilsson <tollepjaer@gmail.com>
Tested-by: Mattias Nilsson <tollepjaer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>