[misc] Added API to the workflow to be able to start the workflow directly for a published document (mark a published document as being part of a workflow).
The script was also implemented for this function, so that forms can be made pointing to there and using the functionality.
[misc] Polished a bit the PublicationWorkflowConfig sheet, to display better the groups in view mode and accept translations for the field labels.
(cherry picked from commit 2b05236703b4d38c7ab8e9ee526e07c21694ab04)
[misc] Improved slightly the overview page to display drafts as well (besides documents in validation and moderation).
Cherry picked with modifications from commit d1044f2057e64d740c6aa15368312a2e0548f1bc .