[BUGFIX] Respect editlock in the UI of list & page module

If editlock is set in the page record, the icons to modify the records
need to be hidden.

Not touched with this patch are JS parts like the drag'n'drop and
inline editing of the page title.

Change-Id: Ie4434ee3a74b1d5427eef7fbd121738d4ccfd6df
Resolves: #68279
Releases: master
Reviewed-on: http://review.typo3.org/41564


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.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>