Bug fix #819
Add ability to create multiple user roles from the app generator
Add default serialVersionUID
Generate DTOs for updating the entity, and a mapper to handle.
Minor customizations to better follow my habits
Fix some yo version problem
Generate service for the entity
refactor mapper code
Fix to skip proxying of the mappers, which cause spring exceptions
Generate relations into DTO-s too
Disable flickering after update/delete caused by first writing an empty promise,
 and later loading the full resultset to the 'entities'.
add missing @Override
Fix the generated menu item to match the rest of the navbar, and add as a translateable key
Generate 'entity-details' page, with custom controller.
Fix LocalDate serialization for update dto