Remove newlines from slice labels due to invalid growth in Y
Remove newlines from slice labels due to invalid growth in Y

- Issue MatterHackers/MCCentral#2125
Progress bars missing during Slice popup status updates

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