[WIP] Notes page.

@tymofij , @olmar , @jmclaus please review.

sandbox: http://polesye.m.sandbox.edx.org/courses/edX/DemoX/Demo_Course/edxnotes
> Actually, I take that back. Now that comparator has been removed from the notes collection, we are not testing ordering in Jasmine as per say. Just that the order in which models are added are unchanged in the rendering. So I would say
> 
> it('should display notes in the same order as they were added as well as their corresponding text and quote'...

Done.