[BUGFIX] Return to content element after closing

When editing a content element in the page module and (saving and)
closing it the view will now jump back to the content element.
This is especially useful for pages with a lot of content.

Resolves: #70074
Releases: master,7.6
Change-Id: Ica27bb561f3b3c19c56b38d211a75e22e018e090
Reviewed-on: https://review.typo3.org/49123


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>