added etags on prepare_for_display items and menuitems

front-api/app.rb

@@ -4,6 +4,7 @@ require './config'
 require 'json'
 require 'sinatra/cookies'
 require 'elasticsearch'
+require 'xxhash'
 
 
 Dir[File.dirname(__FILE__) + '/models/*.rb'].each {|file| require file }
@@ -31,11 +32,14 @@ before do
 end
 
 
-
-
-
 helpers Sinatra::Cookies
 
+def xxhash(text)
+  seed = 31337
+  XXhash.xxh32(text, seed)
+end
+
+
 
 
 Dir[File.dirname(__FILE__) + '/controllers/*.rb'].each {|file| require file }