Mapping of project status from previous ETS versions

The ETS6 project status is just a re-interpretation on UI-level of the existing completion status:

• "Undefined" <=> "Start"
• "Editing" <=> "Editing"
• "Finished Design" => "Editing"
• "Finished Commissioning" => Editing
• "Tested" <=> "Review"
• "Accepted" <=> "Delivered"
• "Locked" => "Delivered"