refactoring of kernel classes

...rtiss/tooling/base/ui/action/ModelElementsActionBase.java

...ng/base/ui/compose/ConnectorConnectionCompositorBase.java

...ui/compose/HierarchicElementConnectionCompositorBase.java

...runk/src/org/fortiss/tooling/base/ui/dnd/DragContext.java

...runk/src/org/fortiss/tooling/base/ui/dnd/DropContext.java

...tooling/base/ui/editpart/policy/LayoutEditPolicyBase.java

...se/ui/internal/command/GEF2ToolingKernelCommandStack.java

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

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

...fortiss/tooling/kernel/ui/internal/views/LibraryView.java

...ernel/ui/internal/views/NavigatorTreeContentProvider.java

...org/fortiss/tooling/kernel/ui/internal/views/NewMenu.java

.../org/fortiss/tooling/kernel/ui/util/DragAndDropUtils.java

org.fortiss.tooling.kernel/trunk/META-INF/MANIFEST.MF

...rg/fortiss/tooling/kernel/base/PrototypeProviderBase.java

...rtiss/tooling/kernel/extension/IConnectionCompositor.java

.../fortiss/tooling/kernel/extension/IConstraintChecker.java

...el/extension/IEclipseResourceStorageLocationProvider.java

.../fortiss/tooling/kernel/extension/IElementCompositor.java

.../fortiss/tooling/kernel/extension/IPrototypeProvider.java