[Application configuration support] [Fix component unmount leak]

src/components/UpgradeIcon/UpgradeIcon.css

@@ -1,6 +1,6 @@
 .UpgradeIcon {
   display: block;
-  margin: 0;
+  margin-right: 2px;
   padding: 0;
   width: 20px;
   height: 20px;

src/components/UpgradeIcon/UpgradeIcon.js

@@ -10,6 +10,10 @@ export default CSSModules((props) => {
   }
 
   return props.available ?
-    <img alt='' style={style} styleName='UpgradeIcon' src={availableImage} onClick={props.clicked}/> :
+    <img alt=''
+         onClick={props.clicked}
+         src={availableImage}
+         style={style}
+         styleName='UpgradeIcon'/> :
     null;
 }, styles, {allowMultiple: true});