User.java changed to UserApplication.java.  now contains global
variables.  Buttons working on main screen, main menu (except logout),
findRestaurant screen.  Created class Server for server connections.
Added a couple methods in there that will need to be filled in.
Here's hoping this works.  Updated buttons.  Still more to go.  Need to
remove server2 and merge with another class but was working on old
version and started a server class.  data is tracked in
userapplication.java.  not sure what storable.java is.  might be same
idea.