[506299] Match Node displays "Match" after merge

Use new adapter MatchOfContainmentDiffAdapter to retrieve significant
label after a merge that leads to delete related object.

Bug: 506299
Change-Id: I0c027dc641552877f3758086cfb3c0ef537b0c20
Signed-off-by: Axel Richard <axel.richard@obeo.fr>
2 files changed