By default, Jenkins disallows display in iframe in order to prevent clickjacking attacks. Therefore, instead of displaying a blank iframe that looks like broken, we should remove it instead.
This means that on Continuous Integration service homepage, there isn't any iframe displayed when you click on a job or its builds.
In widgets, or in case of direct link to a CI items through cross references:
- job #valid_sample_job target page should display a link to the job instead of an iframe
- build #123 target page should display a link to the build instead of an iframe