function login (event) {
            event.preventDefault();
            Auth.login({
                username: vm.username,
                password: vm.password,
                rememberMe: vm.rememberMe
            }).then(function () {
                vm.authenticationError = false;
                $uibModalInstance.close();
                if ($state.current.name === 'register' || $state.current.name === 'activate' ||
                    $state.current.name === 'finishReset' || $state.current.name === 'requestReset') {
                    $state.go('home');
                }

                $rootScope.$broadcast('authenticationSuccess');

                // previousState was set in the authExpiredInterceptor before being redirected to login modal.
                // since login is succesful, go to stored previousState and clear previousState
                if (Auth.getPreviousState()) {
                    var previousState = Auth.getPreviousState();
                    Auth.resetPreviousState();
                    $state.go(previousState.name, previousState.params);
                }
            }).catch(function () {
                vm.authenticationError = true;
            });
        }