[TASK] Fluidification of ElementInformationController

Moved all HTML from PHP code to an own Fluid template.

Resolves: #78644
Releases: master
Change-Id: I5351ce114618c4f9a56070e51df7ebe9de983a21
Reviewed-on: https://review.typo3.org/50642


Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Daniel Windloff <daniel.jc.windloff@googlemail.com>
Tested-by: Daniel Windloff <daniel.jc.windloff@googlemail.com>
Reviewed-by: Valentin Funk <valentin.funk@computerfabrik.de>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>