noosfero | Image destroy (#479)

[Bráulio Bhavamitra]

New comment for Merge Request 479

https://gitlab.com/noosfero/noosfero/merge_requests/479#note_898283


Bráulio Bhavamitra

please squash the last two commits (use `git sq 2` with the alias from https://github.com/brauliobo/gitconfig/blob/master/configs/.gitconfig#L201)

I'll then merge as I see no practical way to find dangling images, as there is too many `image_id` on `db/schema.rb`

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