Replaced TestFlight with HockeyApp
Added HockeyApp licensing data
Implemented Appirater
Fix for a crash when generating data exports
Fix for exported reports showing class names instead of human-readable values

See https://github.com/NialG/Diabetik/issues/1 for more information
Logic for insulin calculation
Work on the insulin calculator. Changes to Core Data to allow for persistent insulin calculation settings.
Additional work on the Insulin Calculator logic
Work on insulin calculator and tighter integration of HockeyApp