Created shell BlogService
First pass at putting methods into BlogService from Blog
Merge branch 'develop' into feature/refactor-blog-service
Refactored into Remote Service

Should have done multiple commits - was hard to do so.
Fixed a few crashes due to logical errors missed in refactoring
Merge branch 'develop' into feature/refactor-blog-service
Added explicit save after batch operation, passing in batch size

Was handling batch size logic improperly from how it was originally written.  I think in general there is a better way to handle the batching and honestly it should only be in the Remote service.  This is the initial refactor.
Added missing save after creating blog
Added TODO for a reminder in the future refactoring
Removed unnecessary imports from refactored model classes
Renamed BaseLocalService protocol to LocalService
Fixed renamed Header file
Merge pull request #1539 from wordpress-mobile/feature/refactor-blog-service

Refactor Blog to remove methods containing business logic