#20 Remove legacy registration mode with link to support
#20 put RegistrationMode enum into his own file with new registration options
* create a custom model for RegistrationMode ListView
* set new localization keys for the new options
#20 replace Person and JDBC operations with the new RegisteringPerson entity as model
* removed checkExistingPerson method for now
* code format
#20 created a new RegistrationManager EJB, begin to move business logic to it; just a skeleton for now
#20 removed unnecessary AjaxWizardButtonBar
Set java source and target to 1.7 in maven configuration
#20 move RegisteringPerson entity to another package, add to persistence.xml
#20 bugfix: prevent duplicated feedback messages, this block accidentally removed in the merge process
#20 implement neptun and date of birth checking in the bean with proper exception handling in the web layer