Make widgets work on iOS 8
Allow widgets to be disabled/enabled in iOS 8
Ordinarily this requires cooperation from the widget's NSExtension,
but we don't have one of those...
Fix iOS 7/8 launchURL bug
Weak link some classes so we can still laod on iOS 5+
Localize widget display names using InfoPlist.strings on iOS 8
Bump version to 1.3 for iOS 7 support (and iOS 8 betas)