added admin option for configuring Aria2 globally;option for diallowing aria2 settings for non-privileged users;cleanining up

src/utils/helper.js

@@ -356,6 +356,9 @@ const helper = {
             }
         }
         return data
+    },
+    isEmptyObject(obj) {
+        return Object.keys(obj).length === 0
     }
 }