[422853] Remove Feature_Matrix page which reference the Family example

This example has not yet been moved to Sirius.
[422853] Remove reference to family and interaction samples

Remove the reference to family sample.
Replace the sample family java service with a sample service on ecore.
Remove the reference to interaction sample. 

Several screenshots still show com.obeodesigner.sample.family.demo and
fr.obeo.sample.ecore.interactions.

Remove some links to Obeo Designer documentation.

Change-Id: Ifaee72b9d89c3fe8b4316fa547ac8d96d1a257b8
[423411] update the documentation about layout

- update the documentation about layout to indicate that layout
algorithms manage only connected edges


Change-Id: Ieba75e29cba6cc8f4d4605ec7a98ef1381064793
[423473] Add version tags during preSave

This should be done on Group and DAnalysis to remember the creation
version. Otherwise, the next loads will trigger the migration (until the
next save).

This is done in resource handlers during preSave. eDeliver has been
deactivated during the version modification to avoid to trigger
notification while save is performed.

Correctly launch the indirectly collapsed node migration. It has been
introduced in 6.5.3 et 6.7.0 versions. The migration application
condition must trigger the migration for version < 6.5.3 or version
between 6.6.0 and 6.7. The sequence migration part has also been
modified.

Change-Id: Ib6eb4b57ac92ab44d81b7298bc2f816fef9016a6
Signed-off-by: Maxime PORHEL <maxime.porhel@obeo.fr>
[423563] Add variables for edge size computation

New variables are available for
EdgeStyleDescription#sizeComputationExpression to compute edge size:
 . sourceView,
 . targetView,
 . view,
 . diagram.

In addition correct preSource variable type in
EdgeCreationDescription#connectionStartPrecondition

Change-Id: If91dc6d389b8f270ede2f207d52acdc6cbd8f982
Signed-off-by: Maxime PORHEL <maxime.porhel@obeo.fr>
[420151] Rename org.eclipse.sirius.pim.ecore.design

Rename org.eclipse.sirius.pim.ecore.design into
org.eclipse.sirius.sample.ecore.design.

Change-Id: Ib6013cd7694234cc51b7cb3c22cf3a3924ffd491
Signed-off-by: Maxime PORHEL <maxime.porhel@obeo.fr>
[422643] Add publication script (taken from master)

Change-Id: I909e64c2bdd7ac9c51c7736b14b31338ca961c57
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>