New Game scene: Does not scale with screen size

[davelustig]

To reproduce:

1. In the Unity IDE, in the Game preview tab/window, change the preview size to "Free Aspect" and verify "Maximize on Play" is selected.
   
2. Start the game from the New Game scene
3. ISSUE: Resize the game window and observer how the buttons and backgrounds overlap when the window is too small. Ideally, these elements should resize to maintain the layout of the page despite the window size/resolution.