reworked kernel services to make use of EObjectAware base implementation

...ooling/kernel/base/ui/action/ModelElementsActionBase.java

...ortiss/tooling/kernel/base/ui/dnd/DropTargetListener.java

.../kernel/base/ui/editor/gef/GraphicalViewerEditorBase.java

org.fortiss.tooling.kernel.ui/trunk/plugin.xml

...rtiss.tooling.kernel.ui/trunk/schema/editPartFactory.exsd

...ss.tooling.kernel.ui/trunk/schema/modelEditorBinding.exsd

...s.tooling.kernel.ui/trunk/schema/modelElementHandler.exsd

...ortiss/tooling/kernel/ui/interfaces/IEditPartFactory.java

...ss/tooling/kernel/ui/interfaces/IModelElementHandler.java

...ss/tooling/kernel/ui/internal/EditPartFactoryService.java

...org/fortiss/tooling/kernel/ui/internal/EditorService.java

...rtiss/tooling/kernel/ui/internal/ModelElementService.java

...fortiss/tooling/kernel/ui/internal/PropertiesService.java

...s/tooling/kernel/ui/services/IEditPartFactoryService.java

org.fortiss.tooling.kernel/trunk/schema/modelElement.exsd

...s.tooling.kernel/trunk/schema/modelElementCompositor.exsd

...ss.tooling.kernel/trunk/schema/modelElementConnector.exsd

...fortiss/tooling/kernel/base/EObjectAware2ServiceBase.java

.../fortiss/tooling/kernel/base/EObjectAwareServiceBase.java

...ss/tooling/kernel/interfaces/ITopLevelElementContext.java