kernel.ui review

...ortiss/tooling/kernel/ui/internal/actions/CopyAction.java

...fortiss/tooling/kernel/ui/internal/actions/CutAction.java

...tiss/tooling/kernel/ui/internal/actions/DeleteAction.java

...rtiss/tooling/kernel/ui/internal/actions/PasteAction.java

...ortiss/tooling/kernel/ui/internal/actions/RedoAction.java

...ortiss/tooling/kernel/ui/internal/actions/UndoAction.java

...g/fortiss/tooling/kernel/ui/internal/actions/package.html

.../kernel/ui/internal/editor/ExtendableMultiPageEditor.java

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

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