[BUGFIX] Fixes rendering of page content titles

Removes the htmlspecialchars from the rendering of
page content titles / tooltips.

Resolves: #76149
Releases: master, 7.6
Change-Id: Ia5ad3df56101fe3962e4a5814df53dabdf5a4bbc
Reviewed-on: https://review.typo3.org/48106


Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>