AC-9141: Review comments addressed

Author: nishant04412

app/code/Magento/Catalog/view/adminhtml/templates/catalog/product/attribute/set/main.phtml

@@ -439,14 +439,12 @@ script;
                         },
 
                         success: function (response) {
-                            if (response.error) {
+                            if (response.error || response.message) {
                                 jQuery("#messages").html(response.message);
                             } else if (response.ajaxExpired && response.ajaxRedirect) {
                                 setLocation(response.ajaxRedirect);
                             } else if (response.url) {
                                 setLocation(response.url);
-                            } else if (response.message) {
-                                jQuery("#messages").html(response.message);
                             }
                         },
 

app/design/adminhtml/Magento/backend/web/css/styles-old.less

@@ -1835,14 +1835,16 @@
     //  Js-tree styles
     //  --------------------------------------
 
-    .jstree-children .leaf .jstree-themeicon {
-        background: transparent url(../images/fam_leaf.png) no-repeat 0 50%;
-        width: 18px;
-    }
+    .jstree-children {
+        .leaf .jstree-themeicon {
+            background: transparent url(../images/fam_leaf.png) no-repeat 0 50%;
+            width: 18px;
+        }
 
-    .jstree-children .system-leaf .jstree-themeicon {
-        background: transparent url(../images/fam_application_form_delete.png) no-repeat 0 50%;
-        width: 18px;
+        .system-leaf .jstree-themeicon {
+            background: transparent url(../images/fam_application_form_delete.png) no-repeat 0 50%;
+            width: 18px;
+        }
     }
 
     //