using CachingUserHelper also with RegistrationItemNameAndTypeButtons to speed up registration workingsets
ref #7785 preliminary commit
ref #7622 persisting new registrations only when typeDesignations have been added
ref #7550 replacing the selfregisration of the VaadinUserHelper to the vaadin session by a UserHelperAccess bean
ref #7552 adapting cdm-vaadin to TypedEntityReference now being in other package
ref #7550 moving the actual CdmUserHelper to cdmlib and making it available in cdm-vaadin by extending the UserHelper class and interface hierarchy
ref #7361 creating new icon 'create-new' & introducing ButtonFactory for harmonization of button creation
renaming package from eu.eu.etaxonomy.cdm.vaadin.security to etaxonomy.cdm.vaadin.permission
ref #7348 moving RegistrationDTO related classes into cdmlib-services conformant packages
switching vom id based to uuid based ui navigation and entity references
ref #7322 hiding addTypeButton when user is not permitted to update the registration
renaming RegistrationItemEditButtonGroup to RegistrationItemNameAndTypeButtons