Add proper HTTP referer [sic] to inlined Minus images.

Fixes #252.
Fipped the 64bit switch, cleaned up related implicit conversion warnings/errors
Fix NSString formatting of NSInteger on 32-bit.

Fixes for 64-bit weren't backwards-compatible.
Mention Awful 2 in README.
Set restoration class for AwfulNavigationController.
Just save the expanding view controller's detail view controller.
Added nil check to ColorWithHexCode
Make basement clear through to the home screen background (if we get rejected reverse this commit)