[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
[build] Add a script to publish "nighly" builds"

Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>
Change-Id: I67a73a01bc9a4e63ac23ba6ce5d4bffd73548438
[422069] Use p2 "composite" repos to implement redirects

Symbolic links are apprently forbidden on download.eclipse.org.

Change-Id: I8f43c170fa29292a62aaf288175daa2321ba47a5
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>
[422069] Fix typo in publication script

Change-Id: I8c6b8edbbf104879a176f61f46ba7b3c46e1ae64
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>