[TYPO3-core] WS bugs for 4.0.3

[Martin Kutschker]

With patch - must haves for 4.0.x:

#3544: RTE-config in PageTS-config not loaded when in draft-workspace
#3666: permissions of versioned pages are not changed in draft workspace

Without patch - must haves for 4.0.x:

#4207: User>Workspaces discloses site info

Tweaks - nice to have:

#3880: Cannot uncheck "Show hidden content elements" in WS
#2935: title-attribute content of "state" column in Versioning view is not 
escaped.
not filed: Publishing does not signal a page tree update.