[FEATURE] Rework workspace notification settings

The current notification settings have some drawbacks and are not
easy to understand if it comes the the expected behavior in the
workspace module. The settings are defined in each sys_workspace
and sys_workspace_stage record and are evaluated in the workspace
module if sending a particular element to be reviewed to the
previous or next stage.

This change extends the meaning and configuration possibilities
on defining the notification settings. In general the notification
modes are replaced by the definition whether the notification
dialog shall be shown and if the preselection can be changed.
Besides that, the preselection is cumulative and defined by
owners, members, editors and responsible persons (for stages).

Resolves: #35245
Releases: master
Change-Id: Icb680fe85fab61a51d53e3afb94b51a4930e180c
Reviewed-on: http://review.typo3.org/31160


Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>