Remove Warnings.xcconfig
Create ConfigChecker
Rename JSON -> LayoutJSON
Enable checking upgrade required
Update Storyboard for Xcode 6
Make ConfigChecker a singleton
Create UpgradeRequiredViewController
Update UI for UpgradeRequiredViewController
Fix UpgradeRequiredViewController crashing iOS 6
Add UpgradeRequiredViewController to iPad
Change UpgradeRequiredVC to a generic error VC
Change group structure
Remove debug logic
Rename ConfigChecker -> Config
Add umobile-global-config availability check
Generalize ErrorViewController; check availability
Stop ErrorViewController being dismissable on iPad
Add error property to Config
Add upgrade recommended check
Fix typo