.gsn files do not display properties in Properties view

[assurance]

o When running Bluetooth.gsn(or any .gsn example) example Properties view does not display properties.
o Opening a new .gsn file behaves the same way.

This is probably a consequence of updating the Extended Editing Framework (EEF) version. The EEF generation will have to be re-performed for this feature to make the editor model sync with the domain model.

Confirmed need to rerun the EEF generation under Helios.

This year we are deprecating the GSN, ARM, CAE, AML and EUROCONTROL models (both textual and graphical) in favor of the OMG's newer SACM metamodel. Changes currently are made on the 'sacm' branch. The SACM models will have an EEF extension once I can work out the adapter identification issues.