Fix: If the default page layout is set to "Canvas" Headers and Footers cannot be edited
Fix: Product Image Dynamic Tag throws an error when no image is set
Fix: Missing Single document placeholder in Theme Builder
Fix: Document editing handles inherit the font-family from 3rd party source
Fix: Can't add linebreaks to Textarea input when used as Multi Step Form
Fix: Incorrect width in Facebook Page widget
Fix: Added compatibility to allow the use of 'get_create_url' in Theme Builder