Changes:
 * TAG member added to several files for logging purposes.  Many more files should be using this.
 * Corrected device registration problem with Urban Airship.  The inbox still isn't working but the device is registering correctly.
 * Added support for Twitter.  Because of the lack of full Android integration with Twitter, I decided to add an additional JSON string field to "TwitterView" pages, "AlternativeURL".  This field describes the web page to get twitter feeds if the platform does not support background authentication.  The "AlternativeURL" value is used to bring up a simple WebView instead of a full Twitter client.  We may add full authentication later but for now, this meets our needs.