Able to use the 'extraNavItem' custom html outlet?

[Mittineague]

Yes, that tutorial is a bit old. I think for the most part much of it is still applicable, but there have been some recent changes

Important changes to Plugin Outlets for Ember 2.10

Shortly I will be merging a branch of Discourse into master that updates us to the latest stable version of Ember, which is 2.10. This is exciting because we’ve been behind Ember’s stable branch for a while and we’ve finally caught up! It also contains the Glimmer 2 template engine which is quite a bit faster so the application should be more responsive, and it also cuts down on our template file sizes so the app should be quicker to download. However, there is a downside, and that I wasn’t abl…