JSON: bugfix: enable_prime_tower worked inversedly
JSON: bugfix: enable_prime_tower worked inversedly

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