Fixed background to be entire screen

re-added background window just for testing out the functions for
changing backgrounds
Made the image for the background be the scatterview not the
scatterviewitem
Think I got a context menu working

Commented out the background window, added a context menu, made the
buttons on it functional.  Only issue is that the context menu appears
to show up anywhere on the screen, not just on the non-clipart window
areas.  Will need to check on Surface table to ensure works properly