Face Swap

User can now swap faces. This is performed by a blending shader.
Old face is replaced with new one. For now only works with default
images for the picture takeing part is not implemented yet. Both male
and female can swap to different pictures. Skin blends accordingly as
well to the face.
Skin blending is performed by taking the average pixel colors in a
given section of the face. The samples are taken from the forehead, and
cheeks.
This functionality only works by clicking the camera button in the
right hand corner. Will changed when the camera part is implemented.