erp5_web_renderjs_ui: Ensure that came_from is html quoted before redirect

See merge request !1889
7 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

00:46:24

failed ERP5.UnitTest-Master

01:23:01

passed SlapOS.Eggs.UnitTest-Master.Python2

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passed SlapOS.Eggs.UnitTest-Master.Python3

00:15:48

passed Wendelin.UnitTest-Master

00:36:57

passed SlapOS.Eggs.UnitTest-Master.Python2

00:13:17

passed SlapOS.Eggs.UnitTest-Master.Python3

00:13:57