renaming package from eu.eu.etaxonomy.cdm.vaadin.security to etaxonomy.cdm.vaadin.permission
fix #7231 replacing SpringApplicationEventBus by scoped Vaadin4Spring Event Bus
fixing ugly 'null' representation in vaadin TextField
fix #7130 implementing registration list filters
fix #6687 per view implementation of the 'session-per-conversation' pattern
ref #6169 Delete button in editors optional
#6169 configure the enable state of fields in a fieldGroup individually
pulling up injectPresenter() in View class hierarchy
#6169 generic cdm entity select lists and using them in the Registration editor
seperating out content initialization from View constructors
ref #6169 initial Popup editor for Registrations