#554 - removed final walkthrough from NUX
553 - Removed welcome screen from NUX
553 - renamed GeneralWalkthroughViewController to LoginViewController
553 - removed unused WPMobileStats constants
Scroll the UITableView to show a newly added post.
Fixes #354
Fix crash and weirdness when deleting the last site
Better abstraction for number of sites
#553 - Changed NUX sign in to have unique WPcom/WPorg forms
#553 - removed unnecessary code from LoginViewController
#553 - Renamed method in LoginViewController
#553 - Fixed LoginViewController layout problems on iPad
#553 - Renamed infoButton to helpButton
#558 - Removed language and site title fields from NUX account creation
Removed scrollview from CreateAccountAndBlogViewController
Renamed controls in CreateAccountAndBlogViewController
Refactored methods in CreateAccountAndBlogViewController
Fix tab-related crash on iOS 6
Merge branch 'develop' into issues/553
Merge branch 'develop' into issues/553
Merge branch 'develop' into issues/554