Caused by silverstripe.com redesign. Ideally we'd
have a permanent asset hosted there which is clearly marked as a test dependency.
Or create a placeholder for images linked served localhost within the Behat tests,
in which case we wouldn't require a network connection to execute Behat.
- Fix “I can insert an image from the CMS file store”.
- Remove unused scenario (we no longer support adding multiple images at once from the CMS).
- Fix “I can edit properties of an image before inserting it” scenario.
- Remove “I can edit dimensions of an image before inserting it” scenario - these fields no longer exist.
- Add documentation to explain why this scenario is marked @todo.
