Remove ancient mapping models and rel. files
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issue/613-remove-old-model-files

Conflicts:
	WordPress/Classes/WordPressAppDelegate.m
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issue/613-remove-old-model-files

Conflicts:
	WordPress/Classes/WordPressAppDelegate.m
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into issue/613-remove-old-model-files

Conflicts:
	WordPress/Classes/WordPressAppDelegate.m
Merge pull request #633 from wordpress-mobile/issue/613-remove-old-model-files

Remove ancient mapping models and related files