erp5_web_renderjs_ui: add the Content-Security-Policy configuration in the HTML page too

This will allow to propagate the CSP configuration on officejs.com
8 jobs for arnau
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

failed ERP5.PerformanceTest-Master

00:25:07

failed ERP5.UnitTest-Master

01:07:24

failed ERP5.UnitTest-Master.Medusa

passed SlapOS.Eggs.UnitTest-Master.Python2

00:13:07

passed SlapOS.Eggs.UnitTest-Master.Python3

00:24:15

passed ERP5.UnitTest-Master

passed SlapOS.Eggs.UnitTest-Master.Python3