EDIT

fixing bug in ShowDetailsEventEntityTypeFilter: wrong filter class used

extending userHelper by method to access the current user

externalizing default support contact string for error messages

ref #7241 documentation, adding serial ids

ref #7241 DelegatingErrorHandler more generically

ref #7241 documentation, adding serial ids, fixing logging

renaming RegistrationItemEditButtonGroup to RegistrationItemNameAndTypeButtons

renaming RegistationDTO.messages to validationProblems

ref #7244 changed listselect to optiongroup

ref #7244 changed layout