School Jotter 4.5 update

Site
- A new Files Download element has been added that allows you to share files and folders to your website.
- Pinterest has been added to the social networks list (compatible bespoke themes only.)
- Extra security has been added to blogs that have been embedded on the website.
- An issue that broke pagination of embedded blogs has been resolved.
- An issue where CSV results were exported incorrectly from Forms has been resolved.
- An issue where images could not be removed from News stories has been resolved.