EDIT

no longer deleting registration when typedesignation editors are canceled

ref #7195 creating blocking relations and showing 'em in the listView

ref #7195 enabling and highlighting blockedBy button

ref #7195 introducing the concept of EditorActionContext stacks to facilitate creating blocking relations

fix #7231 replacing SpringApplicationEventBus by scoped Vaadin4Spring Event Bus

ref #6740 TypeDesignationSetManager switched from workingsetid to baseReference

ref #6740 service methods to load NameTypeDesignations for Registrations

fix #6740 NameTypeDesignationEditor save operation working

ref #6740 NameTypeDesignationEditor implemented

fixing npe