Added in some GUI classes
-ContainerNull (my workaround for a inventory lacking gui)
-NinjaStats (main gui for stats and jutsu)
-NinjaButton (custom button that draws an item Icon for jutsu)
-NinjaTab (custom button that looks like a tab, draws an icon too)

Signed-off-by: Hugo_the_Dwarf <edgaredward2010@gmail.com>