[Application configuration support] [Fix component unmount leak]

src/components/UI/DropDown/DropDown.js

@@ -1,6 +1,6 @@
 import React from 'react';
-import CSSModules from 'react-css-modules';
 import styles from './DropDown.css';
+import CSSModules from 'react-css-modules';
 
 export default CSSModules((props) => {
   const options = props.items.map((s, i) => {