Fixes for image resizing.
Fixes for image resizing.

davidmdavis/contentful.objc,davidmdavis/contentful.objc,contentful/contentful.objc,akfreas/contentful.objc,contentful/contentful.objc,danieleggert/contentful.objc,danieleggert/contentful.objc,danieleggert/contentful.objc,contentful/contentful.objc,akfreas/contentful.objc,davidmdavis/contentful.objc,akfreas/contentful.objc