fix vulnerability

lib/ask/engine.rb

@@ -51,6 +51,7 @@ module Ask
       OrbitApp.registration "Ask", :type => "ModuleApp" do
         module_label "ask.ask"
         base_url File.expand_path File.dirname(__FILE__)
+        set_keyword_contstraints ['/asks']
         widget_methods ["widget"]
         widget_settings [{"data_count"=>10}]
         taggable "AskQuestion"