Update the RamExpandableComponent

[Romain Alexandre]

Create a Sub class Generic of RamExpandableComponent that will have : RamExpandableListComponent<T extends EObject>

• its hideable component will be a RamListComponent<T>
• it will be notified when he has to add or remove an object from the RamListComponent

This component can be used in the containers. For example, in the ImpactModelContainer, we redraw the whole list when a notification is received. With this component, only the sub list that contains the goal will be updated.

[Cécile Camillieri]

Not necessarily related, but it could be interesting to provide an interface you can implement to receive notifications when an expendable is opened/closed.