Openstack images form fails for unnamed images
The images helper looks for a .name attribute in all fog images in Openstack. However, it's possible to create images just with an ID and without a name (there is currently one in OS1 private). The form will fail with "undefined method `downcase' for nil:NilClass" for that image as it cannot find its name.
Just defaulting to the id of the image if the name is not available should be enough.