Created Invitation-entity
Updated User-entity with OneToOne with Invitation
Empty line removed
Invitation: fix bug
User: update DataFixtures and Some nullable fields
Global Backend Form Template
Login form will extend the global form template
Added Author (meeeee)
Changed title from Login Form
Deleted Invitation Entity
Deleted Invitation Support
Added RegistrationFormType
Added registration form view
Updated config, so that the RegistrationFormType will be used
Updated routing
Updated routing according to FosUserBundle
When a user registers, standard mode is DISABLED
Update routing