After a User is logged in, if he has the Organizer role, the application should provide a link to the BackOffice.
All of the BackOffice's routes must be protected and allowed to Organizers only: the user must have the user custom claim { organizer: true }.
If a user without the required role tries to navigate to one of the BackOffice's routes, the application must redirect to the home page or to a 404 page.
Depends on #126.