[423037] Replace viewpoint.DSemanticDiagram by diagram.DSemanticDiagram

The DSemanticDiagram eClass has moved, so for Acceleo3, there is some
DAnnotation that are false.

Change-Id: I5c196674d4c9dad0eb80e834623a2e9ff5a0e8c1
Signed-off-by: Laurent Redor <laurent.redor@obeo.fr>
[423037] Update DiagramSplitMigrationParticipant.MIGRATION_VERSION
comment

Change-Id: I702f76ecb54d8854f553aad4fecd7faefe8f7405
Signed-off-by: Maxime PORHEL <maxime.porhel@obeo.fr>
[cleanup] Restrict the Diagram.type change to Viewpoint Sirius case

Replace only the 'Viewpoint' Diagram.type by 'Sirius'. 
Use the DDiagramEditPart.MODEL_ID as this is the constant used to set
the type of the newly created diagrams.

Change-Id: Ic4450883dfc4cfc5efef8f25cd3562a5aff22294
Signed-off-by: Maxime PORHEL <maxime.porhel@obeo.fr>
[423037] Complete the release note to clarify particular cases

Change-Id: I41938dd54bfef79831a690ecc9ce38e840a71c10
Signed-off-by: Laurent Redor <laurent.redor@obeo.fr>
[426134] add a popupStructuredContributionCriteria to apply the
popupPredefinedItem only on Sirius diagram edit part.

Change-Id: Id618fe9f7e1ab5ffe4860c9b453f281f903d0ea7
[cleanup] Fix some mistakes during using of new interpreters

Change-Id: I195459f60a1993daec137d20de0ad86102a8eec0
Signed-off-by: Laurent Redor <laurent.redor@obeo.fr>
Merge "[cleanup] Fix some mistakes during using of new interpreters"