Updated to Xcode 5.1. All developers should use Xcode 5.1 (with iOS 6.1 SDK side-loaded) from now on when developing for Marguerite.
Updated schedules to March 15 schedule, updated corresponding text in About view. Removed references to Cardinal Devs since that's not happening.
Removed unused references to Cardinal Devs section in About view.
Removed arm64 from list of architectures since 6.1 SDK does not seem to support it.