fix for #4844
CdmVaadinAuthentication : new class used for authentication
AuthenticationPresenter, AbstractAuthenticatedUI, CdmVaadinSessionUtilities, AuthenticationView, IAuthenticationComponent : using new authentication object linked to host and context path
CdmVaadinBaseTest, AuthenticationPresenterTest : test classes for new authentication
fix for #4844
CdmVaadinAuthentication : new class used for authentication
AuthenticationPresenter, AbstractAuthenticatedUI, CdmVaadinSessionUtilities, AuthenticationView, IAuthenticationComponent : using new authentication object linked to host and context path
CdmVaadinBaseTest, AuthenticationPresenterTest : test classes for new authentication