Changing the way Echo's front-end architecture works to work with
model-view-controller methodology.
Change-Id: I97862402c41bc04dd41cd08d79f19ff677340249
Split and refactor Echo network handling and create a proper API
layer for the UI to use consistently. Split Echo's API methods into
its own module so they can be loaded along with the initialization
script and manage the API requests.
Change-Id: I0526a14bb8cc0d9729a303e24ab6e43259cc86bb
