[FOLLOWUP][TASK] Fluidification of ShortcutToolbarItem

No changes to parameters in language labels are allowed therefore
a new label for the bookmark description is needed.

Change-Id: Ib1997282905eb8321b903235581d9931449c85d8
Resolves: #77800
Releases: master
Reviewed-on: https://review.typo3.org/50943


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Alexander Opitz <opitz.alexander@googlemail.com>
Tested-by: Alexander Opitz <opitz.alexander@googlemail.com>