Split discussion controls into three groups:

- user (reply, subscription)
- moderation (rename, sticky, tags)
- destructive (delete)

Will keep extension-added items organised nicely

js/lib/utils/item-list.js

@@ -59,7 +59,18 @@ export default class ItemList {
       }
     });
 
-    return array.map((item) => item.content);
+    array = array.map(item => item.content);
+
+    //recursively flatten array
+    for (var i = 0, len = array.length; i < len; i++) {
+      if (array[i] instanceof Array) {
+        array = array.concat.apply([], array);
+        i-- //check current index again and flatten until there are no more nested arrays at that index
+        len = array.length;
+      }
+    }
+
+    return array;
   }
 }