Basic login/logout working.
Getting my User in the controller as @AuthPrincipal
Added basic error page.
updated some user and security stuff.
Anemic style for User entoty
Merge branch 'develop' into feature/user-management

* develop:
  Making the list of results more readable (using ol/li).
Roles started to work
Working Roles:
/system/** -> ROLE_SYSTEM
/*/admin/** -> ROLE_ADMIN, ROLE_SYSTEM
/** ->  ROLE_ADMIN, ROLE_SYSTEM, ROLE_USER
Merge branch 'feature/user-management' into develop