Updating ember libs

    - ember.js -> 1.2
    - ember-data -> 1.0.0-beta.4+canary.49b9d0bd
    - ember-data-django-rest-adapter -> b388aa94 (04 Dec 2013)
Using js convetions in doneBy attr of treatment ember model

    - Also modified styling in treatment list
Using new Error handling feature from ember 1.2

    - Ember 1.2 introduced error handling that bubbles the error
      to an ErrorRoute or error template thus making a big chunk
      of my solution redundant. Yay! less code rulez!
Better error message
Using the less verbose mode of link-to helper

    - Introduced in ember 1.2