[TASK] Doctrine: Migrate ext beuser viewhelpers

Resolves: #76507
Releases: master
Change-Id: Ib8a3cda5e691036ed5836aaabc77ced681a860d7
Reviewed-on: https://review.typo3.org/48491


Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>