Fixed error when projecting the 2D skeleton. The problem was how the
pixels where access using ushort when they were uchar.
Deleted commit that was there only for testing purposes.

This reverts commit bd92dc09c8ad9c4713117b17fa4e1c7be1ffa7a3.
2D and 3D skeletons are now projected using the camera transformation so the
are placed correctly in the 3D world