More search tests + fix body searching

[elsand]

• Adds utility functions
  • For manipulating dialog DTOs before submitting (setTitle, setExtendedStatus etc)
  • console.dir for printing objects (not implemented in Goja/K6)
  • expectStatusFor(respo).to.equal(200) as shorthand for expect(response, "response status").to.equal(200), which also displays additional info if an error details reponse
  • Added hasLocalizedText extension to Chai, eg. expect(r.json().items[0], 'first dialog').to.have.property("title").that.hasLocalizedText("some title", "nb_NO"); /* cultureCode optional */
• Handles serialization of DTOs in request.js, if necessary (no need to remember it at callsite)
• Add search in "body" in dialogs (will be replaced in Endre dialog-modell mht innholdsfelter (body, title etc) og innfør "summary" #215)

[sonarqubecloud]

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