[ref #4398] added hover styling to icon group

src/definitions/elements/icon.less

@@ -122,12 +122,12 @@ i.fitted.icon {
          Link
 --------------------*/
 
-i.link.icon {
+i.link.icon, i.link.icons {
   cursor: pointer;
   opacity: @linkOpacity;
   transition: opacity @defaultDuration @defaultEasing;
 }
-i.link.icon:hover {
+i.link.icon:hover, i.link.icons:hover {
   opacity: 1 !important;
 }