erp5_web_js_style&test: add field to define favicon icon

See merge request !1344
4 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

01:07:02

passed ERP5.PerformanceTest-Master

00:24:15

passed SlapOS.Eggs.UnitTest-Master.Python2

00:29:25

passed SlapOS.Eggs.UnitTest-Master.Python3

00:15:50