JSON fix: combing mode default enum value (CURA-694)
JSON fix: combing mode default enum value (CURA-694)

senttech/Cura,senttech/Cura,fieldOfView/Cura,totalretribution/Cura,fieldOfView/Cura,ynotstartups/Wanhao,hmflash/Cura,hmflash/Cura,Curahelper/Cura,Curahelper/Cura,ynotstartups/Wanhao,totalretribution/Cura