Work on sync
Extensive work towards iCloud sync support
Various aesthetic fixes
Further work towards the adoption of iCloud sync
Additional work on iCloud sync
Changes to the Carb report
Fixed strong self reference in block
Switching back to local Core Data
Removed references to UbiquityStoreManager
Merge branch 'refs/heads/sync'

Merged work on the sync branch, which creates a Core Data singleton and references it throughout the application. This should make it easier to integrate iCloud syncing in the future.