Changes

* What does it look like to distribute apps via [https://wiki.mozilla.org/Marketplace/Desktop marketplace in the desktop browser]?Desktop UI Redesign - [https://docs.google.com/a/mozilla.com/document/d/1Nfsl5-b0WWw8Df8QmrpeOJX-ZlXMVxLYHEdS-0cGZOU/edit# Desktop UI Redesign Mini PRD (Oct 13, 2014)] * Platform Filtering - [https://docs.google.com/document/d/1ipltm10Jenrg9zvrb4MXpPzYYKGKbHR-CM7XWepGx9g/edit?usp=sharing Platform Filtering Functionality (Sept 2014)] * Desktop Payments - [https://docs.google.com/document/d/1Nfsl5-b0WWw8Df8QmrpeOJX-ZlXMVxLYHEdS-0cGZOU/edit?usp=sharing Desktop Payments MVP - CC and Mobile Billing (Oct 9, 2014)]