Do spiderOakApp.initialize() in beforeEach() so that the test does not
fail when run separately from the other tests.
Some small changes to simplify debugging.
Identified the problem causing failure of .addOne to be called on
total fetch of a collection.  Per the backbone [Change
Log](http://backbonejs.org/#changelog) documentation for the 1.0.0
version, collection update now does a .set rather than a .reset.

This is a quick workaround: pass {reset: true} in the fetch
options.  I'm going to next see how we could change our code to fully
use the new approach.