Template.header.helpers({
    brandLink() {
      let login = FlowRouter.path( 'login' ),
          index = FlowRouter.path( 'index' );
      return !Meteor.loggingIn() && !Meteor.userId() ? login : index;
    }
  });

  Template.header.events({

    'click .logout' () {
      Meteor.logout( ( error ) => {
        if ( error ) {
          Bert.alert( error.reason, 'warning' );

        } else {

          Bert.alert( 'Logged out!', 'success' );

        }
      });
    }
  });