Update Ember.js, Handlebars and jQuery to latest
FIX: Deprecation warnings on Ember.js for render without quotes.
FIX: Use the container to register Discourse's custom location handler
FIX: Malformed HTML in templates
FIX: Ember doesn't allow one route name, `basic`, and Discourse used it!
FIX: Rather than using `singleton: false` for avoiding caching in the
container, just unregister it afterwards.
FIX: ZALGO test suite was causing failures in the wrong place due to
missing `async` bits.
Port "Summarize Topic" to query-params-new
Use query params for sortable table headings