Moved Kinect code to MVVM pattern

Initial version. Stream from the camera works fine.
Added dummy ClothingCategory and item template
Skeleton's finally binding

Need to correct the mapping
Corrected a bit the skeleton mapping.
Skeleton having its proper size and position.

Also updated hand cursor and removed unnecessary properties and fields.
Hand cursor working on left hand
Hand tracking works on both panels
Added buttons template, layout and button events
Fixed a bug with Buttons events synchronization
ICommands working with Hand Events
Added Model base class
Added button style
Fixed displaying button images bug
Added clothing categories. Started on binding the buttons collection