Fix scrolling in latest React versions (#483) (Fixes #482)

Remove whitespace react element in `FixedDataBufferedRows`

See #483 on why this fixes scrolling in latest versions of React.

src/FixedDataTableBufferedRows.js

@@ -105,7 +105,7 @@ class FixedDataTableBufferedRows extends React.Component {
       });
     }
 
-    return <div> {this._staticRowArray} </div>;
+    return <div>{this._staticRowArray}</div>;
   }
 
   /**