Fixed base (took out ObjectSource)
Fixed base (took out ObjectSource)

issue: MatterHackers/MCCentral#3585
Put image converter construction (object tree) into primitives container

jlewin/MatterControl,larsbrubaker/MatterControl,larsbrubaker/MatterControl,unlimitedbacon/MatterControl,larsbrubaker/MatterControl,unlimitedbacon/MatterControl,mmoening/MatterControl,larsbrubaker/MatterControl,mmoening/MatterControl,jlewin/MatterControl,mmoening/MatterControl,jlewin/MatterControl,unlimitedbacon/MatterControl,unlimitedbacon/MatterControl,jlewin/MatterControl