AMBARI-13501. Default cursor for export graph data dropdown menus

ambari-web/app/styles/common.less

@@ -354,7 +354,10 @@
   top: 25px;
   min-width: 60px;
   font-size: 14px;
-  cursor: default;
+  cursor: auto;
+  a {
+    cursor: pointer;
+  }
 }
 
 .bootstrap-checkbox {