Syntax cleanup
Added MVP5200i UI

New Features:
-Added hard button control on MVP-9000i Demo UI
-Added MVP-5200i Demo UI
-Layed UI groundwork for "Now Playing" text
-Fixed Volume and Progress percent text
-Enabled Progress Bar polling by default in Demo.

Known Issues:
In some Boxee apps, the menu button is not returning to the main
dashboard UI.  Strange because the phyical button on the remote works.