[560031] Ignore jump links for overlapped segments If the starting point, or ending point, is the same on the 2 lines, the jump link is ignored because a part of the lines is common and the jump link is not desirable as it does not improve the readability of the diagram. This kind of jump links is called "partial jump links". Bug: 560031 Change-Id: Idcbca62c936645f51886f32e2ebed90ec13d418a Signed-off-by: Laurent Redor <laurent.redor@obeo.fr>