Fixed issue with the FontAwesome stylesheet not loading in built versions of the app.  Turns out there is a bug currently with Sencha Cmd and using the remote: true setting for resources.  So for now, changed the code to just include the <link> tag for the FontAwesome stylesheet into the index.html file.
Step 21 - (optional) Add web.config with a mime-type definition for .json files so the application can be hosted as an Azure Website.  This is needed so the app.json file can be loaded.