erp5_web_jabber_client: implement desktop notifications

6 jobs for <span class="ref-name">jabber-notification</span> in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

passed ERP5.PerformanceTest-Master

00:26:20

failed ERP5.UnitTest-Master

failed ERP5.UnitTest-Master.Medusa

passed SlapOS.Eggs.UnitTest-Master.Python2

00:41:45

passed SlapOS.Eggs.UnitTest-Master.Python3

00:09:55