Adds noindex,noarchive robots meta tag on form pages (#7582).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5443 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -900,6 +900,10 @@ module ApplicationHelper
   def favicon
     "<link rel='shortcut icon' href='#{image_path('/favicon.ico')}' />"
   end
+
+  def robot_exclusion_tag
+    '<meta name="robots" content="noindex,follow,noarchive" />'
+  end
   
   # Returns true if arg is expected in the API response
   def include_in_api_response?(arg)