(fix) Extension was not properly referencing to singInFormFactory
Extension is registering Nette\Security\IAuthenticator only if there is none
Added user repository definition to extension
(fix) Model definition in extension was wrong
(fix) Entity definitions contained errors
(fix) FindUserByUsernameOrEmailQuery was using username instead of name
(bc) Renamed model getByUsernameOrEmail to getByNameOrEmail
Renamed FindUserByUsernameOrEmailQuery to FindUserByNameOrEmailQuery
Added Sign presenter
Registered presenter mapping