Fallback to anonymous when no jira config entry is found

Indeed it should not have been removed but GitHubApp does not support adding this licence in the XML. We will report an issue for that to add that feature to GitHubApp. In the mean time we will rerun xar format. However is there a way to activate/deactivate this licence adding in xar:format. It is not always the case where we want to add a licence and we still want to run xar:format.