This allows us to use `getOwner(this)` on widgets (without needing to resort to our custom `discourse-common/lib/get-owner` implementation which has a hacky fallback)
This is to help with the migration to Ember CLI. In the current running
version of Discourse everything should be the same as before, just with
a few extra files that are not used. However, using Ember CLI this can
be installed as an Ember addon.
Co-Authored-By: Jarek Radosz <jradosz@gmail.com>