I use the report generator (https://github.com/danielpalme/ReportGenerator) to generate a report of the nunit test results. The report contains also a javascript file (combined.js) to create a history chart. But this javascript file is never downloaded, although I have changed the security setting to "sandbox; default-src 'self';" as suggested in this page (https://wiki.jenkins-ci.org/display/JENKINS/Configuring+Content+Security+Policy)