Purge images from openfarm that are now 404

[CloCkWeRX]

https://openfarm.cc/ is now dead.
S3 buckets gone.

[CloCkWeRX]

<img alt="Image of lavender" class="img img-card" src="https://s3.amazonaws.com/openfarm-project/production/media/pictures/attachments/57e814cb7cf5dc000300026a.jpg?1474827466">

[CloCkWeRX]

Staging - before

[CloCkWeRX]

Annoyingly, this deleted a lot of images but did not get all of them.
IE:
https://s3.amazonaws.com/openfarm-project/production/media/pictures/attachments/59ef82bb1eab0c0004000002.jpg?1508868790
is still linked on the homepage
https://growstuff-staging.herokuapp.com/crops/grapefruit

Even when I have done bundle exec rake tmp:cache:clear.

[CloCkWeRX]

Not dangling PhotoAssociations, as we do...
has_many :photo_associations, dependent: :delete_all, inverse_of: :photo

[CloCkWeRX]

Production, manual backup taken

Also, eek, Heroku threatens our data by not having automatic backups unless we pay? That's pretty crappy behaviour.

[CloCkWeRX]

[CloCkWeRX]

    def default_photo
      Rails.cache.fetch("#{cache_key_with_version}/default_photo", expires_in: 8.hours) do
        most_liked_photo
      end
    end

[CloCkWeRX]

TODO: Check later today, close

[CloCkWeRX]

Nope. https://s3.amazonaws.com/openfarm-project/production/media/pictures/attachments/5e5ae56757c060000446d86b.jpg?1583015269 still linked to.

[CloCkWeRX]

Round 2: https://jules.google.com/task/8335129574677546071

[CloCkWeRX]

Very annoying:

bundle exec rake openfarm:delete_pictures

on staging

But: