Fix Ember Canary Build

This PR does three things:

 1. make the `make` output a little nicer by hiding intermediary commands and using `echo` to output nice status messages
 1. change `script/run` to exit with status 1 if the tests fail. A TranslateableAttributes test has been failing for a while, but Travis wasn't reporting failures because `script/run` always exited with status 0.
 1. fix the TranslateableAttributes tests on Ember Canary. Ember Canary's `{{view}}` helper no longer assumes `Ember.View` as the default view class; instead, it asks the container (which the spec didn't set up) for `view:default`.

cc @locks @rwjblue @workmanw
@jamesarosen I believe @locks is referring to the impending deprecation of `{{view SomeGlobal.Thing}}`. Global references in templates are on their way out. [This guide](https://github.com/mixonic/website/blob/22cc060c82151131f1dd239ab599285863b315bc/source/guides/deprecations/index.md#emberjs-libraries-and-plugins) has some ideas on how to address the issue in plugins. I welcome your thoughts!