Drop creation of our App view at startup and rename App to PhoneApp

As we're a nowindow app at startup we have to create an additional window where we can
render our app content into.

Open-WebOS-DCO-1.0-Signed-Off-By: Simon Busch <morphis@gravedo.de>
First implementation of the nowindow application handling

Open-WebOS-DCO-1.0-Signed-Off-By: Simon Busch <morphis@gravedo.de>
Fix initial launch & relaunch handling

* Move PhoneApp rendering into it's own html file
* Remove onDeviceReady handler, as it was unnecessary
* Add noWindow: true to appinfo.json
* Rewrite the relaunch handler
  (Now handles creation and activation of the PhoneApp card)
* Create Backend object on first launch
  (For handling background services such as incoming calls etc)

  Open-WebOS-DCO-1.0-Signed-Off-By: Josh Palmer <jpalmerwatkins@me.com>