Replace views/json/_flash.rabl with an ams injector with serializer

app/helpers/injection_helper.rb

@@ -115,6 +115,10 @@ module InjectionHelper
     inject_json_ams "user", spree_current_user, Api::UserSerializer
   end
 
+  def inject_rails_flash
+    inject_json_ams "railsFlash", OpenStruct.new(flash.to_hash), Api::RailsFlashSerializer
+  end
+
   def inject_json(name, partial, opts = {})
     render partial: "json/injection", locals: { name: name, partial: partial }.merge(opts)
   end

app/serializers/api/rails_flash_serializer.rb

@@ -0,0 +1,3 @@
+class Api::RailsFlashSerializer < ActiveModel::Serializer
+  attributes :info, :success, :error, :notice
+end

app/views/json/_flash.rabl

@@ -1,2 +0,0 @@
-object OpenStruct.new(flash.to_hash)
-attributes :info, :success, :error, :notice

app/views/layouts/darkswarm.html.haml

@@ -44,7 +44,7 @@
 
     = inject_current_hub
     = inject_current_user
-    = inject_json "railsFlash", "flash"
+    = inject_rails_flash
     = inject_taxons
     = inject_properties
     = inject_current_order