Why don't I see the UV map? I had done my material work on an older version of Blender (2.7).

Now I updated my Blender version, my older mesh had several materials, but now I can only see one.

Why I only see one material? When I select one image of the older, its unwrap right so all is there where it should be, when there was this picture on this place, but when I go to the UV Image Editor I can't see the unwrapped mesh.
The window on the left is the Image Editor you need to use the new UV Editor to see the unwrap.