diff in workspaces lost colors
As a sideeffect of git show aff26 / #69904 the record history in the workspace module lost the colors in the diff (see attached screenshots)
The styles, that add the colors on the <del> and <ins> elements, do not match the Html that is used inside the workspace.
[BUGFIX] Bring back some colors in workspace diff view
CSS definitions for <ins> and <del> tags. This is only needed for 7.6.
Followup to #69904 which didn't consider workspaces
Reviewed-by: Jan Helke <firstname.lastname@example.org>
Tested-by: Jan Helke <email@example.com>
Tested-by: TYPO3com <firstname.lastname@example.org>
Reviewed-by: Anja Leichsenring <email@example.com>
Tested-by: Anja Leichsenring <firstname.lastname@example.org>