Changes
=== New features ===
* A new control for viewing documents with 3D content was added. It allows basic pinch/zoom/selection actions with touch and mouse and currently supports .obj, .3ds and .stl formats, without textures. It is now the default document viewer for UBK documents with .obj extension, both in DetailsPage as well as DocumentsPage.
* The in-app PDF viewer now re-renders PDF documents after zooming to provide better readability.
