Local: Updated Wallpaper to my own

• Updated Wallpaper to the one I'm currently using.
	» Wouldn't it be nice if we could steal the device's current wallpaper via a private API?
Local: Changed App graphic to simpler black image

• Changed the mock App graphic to a simpler black image with an outlined home button at the bottom of the screen.
	» The same size (on 326ppi devices) and just above the real one.
Local: Who the hell is Lucas Munch anyway?
Local: Made portrait-Upright-Only

• Made it use only portrait-upright so that the home button is positioned correctly in the App image.
First pass at parallaxing bg

• Moved LMViewControllerView's bg creation code to LMSpringboardView's `-LM_initBase`, except for the `insertSubview:` which is in its `-didMoveToSuperview`.
	» Since we still want this view outside of the ScrollView, but the movement logic needs to be here.  The right way to do this would be to hack the UIScrollView further or do all the positioning logic in a UIViewController.
• New `repositionBGView`/`repositionBGViewScaled:` methods change the `_bgView`'s affine transform appropriately.
	• New `_contentOffsetCache` ivar is set by the added `scrollViewDidScroll:` hook, which also calls `-repositionBGView`.
	• Also called from within `-doIntroAnimation`.