Merge branch 'IFJJV-SK-161-RegistrationPage' into IFJJV-SK-163-SaveUser
populated dropdowns: role, locations, categories
made DTOs
configured services, repositories, entity
made registration facade
made registration controller
made front-end saving user logic
configured registration.jsp with events
Merge branch 'develop' into IFJJV-SK-163-SaveUser
fixed birthday date saving
made hidden panels
cleaned up javasvript code
setted up required fields with red color placeholders