Some improvments

[DysLabs]

I'm currently working on Checkers, and I found some of this annoying.

1) There is no system for getting the size of the user's screen.
(for making a UI that covers the entire screen;positioning a element relative to the size of the screen;etc.)
2) Undecorated should be 'Decorated'
(just makes more sense to me)
3) There's no 'UI Service'
(so you don't have to make a loading script)

(unrelated) 4) There should e an item search
(so people don't have to search the long list of items/use a script to get one, they can type the item name in the 'Insert Object' menu.)

(unrelated) 5) Fix the lag
(self-explanatory;I can barely walk)