Player and platform update information

We've updated the player:

1. There is a new module in the Media category available - Model Viewer 3D. It renders any gltf or glb 3D model using WebGL. It supports animations, labels, displays copyright information if provided, and much more. You can see the list and description of all possibilities in the module's documentation page and in the Demo Presentation
   
2. New Zoom addon that allows to zoom in on a lesson page (.ic_page element) and interact with modules while zoomed in is now available.
3. Some bugs were fixed, e.g. XLIFF export is now working properly.