Update parameter editor to use newer JSON Editor

See merge request !580
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Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

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failed SlapOS.Eggs.UnitTest-Master.Python2

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failed SlapOS.Eggs.UnitTest-Master.Python3

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failed SlapOS-Master.UnitTest-Master

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failed SlapOS-Master.UnitTest-Master

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failed SlapOS-Master.UnitTest-Master

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failed SlapOS.Eggs.UnitTest-Master.Python2

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