some alignment fixes for the new username position
Merge pull request #2306 from awesomerobot/master

some alignment fixes for the new username position
Proof of concept: Load controller via ES6 module in Discourse
ES6: `AvatarSelector` and `HeaderController` - also includes support for controllers with
camelcase via an error message.
ES6: Uses proper `normalize` method, includes support for namespaced
controllers.