Fix data.sql (new column-names)
Prepare Object-to-Object MappingService
Refactoring AuditService (no entities returned from service)
Fix Layout-Issues in audit.xhtml
Remove User-Entity from controller-layer
Create FacesHelper to improve mockability
Fix issues with "edit password"

- Password was requoted (security issue)
- Due to request scoped bean, e-mail has been cleared, when submit
"change password"
Merge branch 'Refactoring: Remove Audit and User Entity from controller'