add reverse containment links, relax multiplicity, remove genmodel

....edit/icons/full/ctool16/CreateNS_dependsOn_DependsOn.gif

...seclipse.iec61850.nsd.edit/icons/full/obj16/DependsOn.gif

...upelec.edf.riseclipse.iec61850.nsd.edit/plugin.properties

...seclipse/iec61850/nsd/provider/DependsOnItemProvider.java

...edf/riseclipse/iec61850/nsd/provider/DocItemProvider.java

...lipse/iec61850/nsd/provider/DocumentRootItemProvider.java

.../edf/riseclipse/iec61850/nsd/provider/NSItemProvider.java

.../iec61850/nsd/provider/NsdItemProviderAdapterFactory.java

...1850/nsd/provider/ServiceTypeRealizationItemProvider.java

...entralesupelec.edf.riseclipse.iec61850.nsd/model/nsd.aird

...ntralesupelec.edf.riseclipse.iec61850.nsd/model/nsd.ecore

...alesupelec.edf.riseclipse.iec61850.nsd/model/nsd.genmodel

...supelec/edf/riseclipse/iec61850/nsd/ACSIServicesKind.java

...ralesupelec/edf/riseclipse/iec61850/nsd/Abbreviation.java

...alesupelec/edf/riseclipse/iec61850/nsd/Abbreviations.java

...esupelec/edf/riseclipse/iec61850/nsd/AbstractLNClass.java

...ntralesupelec/edf/riseclipse/iec61850/nsd/AnyLNClass.java

...elec/edf/riseclipse/iec61850/nsd/ApplicableServiceNS.java

...pelec/edf/riseclipse/iec61850/nsd/ApplicableServices.java

...alesupelec/edf/riseclipse/iec61850/nsd/AppliesToType.java