added extension point for eclipse resource storage location providers

...c/org/fortiss/tooling/base/ui/ToolingBaseUIActivator.java

...nk/src/org/fortiss/tooling/base/ToolingBaseActivator.java

...g/fortiss/tooling/kernel/ui/ToolingKernelUIActivator.java

...nk/src/org/fortiss/tooling/kernel/ui/base/EditorBase.java

...rtiss/tooling/kernel/ui/base/ModelElementHandlerBase.java

...kernel/ui/base/NamedCommentedModelElementHandlerBase.java

...tooling/kernel/ui/databinding/EObjectObservableValue.java

...rg/fortiss/tooling/kernel/ui/databinding/Observables.java

...oling/kernel/ui/interfaces/IActionContributingEditor.java

...ernel/ui/interfaces/IBindingEditorPageChangeListener.java

.../tooling/kernel/ui/interfaces/ICustomMenuContributor.java

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

.../fortiss/tooling/kernel/ui/interfaces/IEditorBinding.java

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

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

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

...tooling/kernel/ui/internal/editor/BindingContributor.java

...ng/kernel/ui/internal/editor/ModelElementEditorInput.java

...rnel/ui/internal/properties/IdLabeledPropertySection.java

...ui/internal/properties/NamedCommentedPropertySection.java