[BUGFIX] EM: Add title attribute to showAllVersions links

Add meaningful title attributes to all links which leads to the
showAllVersions action.

Resolves: #80029
Releases: master, 7.6
Change-Id: I85b9ee21514fbffd84734c4149d67237abb19652
Reviewed-on: https://review.typo3.org/51869


Reviewed-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>