-Updated the layout of GameWindow by adding some grids; I commented out Tyler's canvas implementation. In case you (Tyler) see this before we discuss my change, here's my reasoning: Grids allow objects to 1) be displayed with relative positions and 2) scale according to the size of the window. On the other hand, placing objects in a Canvas requires specific (x,y) coordinates (that is, absolute positioning).

-The Deck now loads all the images from the Images folder (instead of copies of the same image).
-The LaunchScreen textbox is now set to '2' by default.
-Deleted non-image files from the Images folder.