[BUGFIX] Fixed permissions of media field in page properties

It was not possible to add media to the page properties if the user has
only the permissions for "page edit" and not for "page content"..

Resolves: #66702
Releases: master, 6.2
Change-Id: I553ee805a0e992d2ea5e00b91e7de733b2e4c94e
Reviewed-on: http://review.typo3.org/40835


Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>
Reviewed-by: Markus Sommer <markussom@posteo.de>
Tested-by: Markus Sommer <markussom@posteo.de>
Reviewed-by: Andreas Wolf <andreas.wolf@typo3.org>
Tested-by: Andreas Wolf <andreas.wolf@typo3.org>