minor optimizations

interface/src/project/DashboardSensors.tsx

@@ -446,7 +446,7 @@ const DashboardSensors: FC = () => {
       )}
 
       <ButtonRow>
-        <Box display="flex" flexWrap="wrap">
+        <Box mt={2} display="flex" flexWrap="wrap">
           <Box flexGrow={1}>
             <Button startIcon={<RefreshIcon />} variant="outlined" color="secondary" onClick={fetchSensorData}>
               {LL.REFRESH()}