Properly position groups and nodes once ungrouped
Properly position groups and nodes once ungrouped

CURA-273 #Review

senttech/Cura,ynotstartups/Wanhao,senttech/Cura,hmflash/Cura,hmflash/Cura,ynotstartups/Wanhao,totalretribution/Cura,Curahelper/Cura,markwal/Cura,totalretribution/Cura,fieldOfView/Cura,fieldOfView/Cura,Curahelper/Cura,markwal/Cura,bq/Ultimaker-Cura,bq/Ultimaker-Cura