move to evented mustache system

app/controllers/supplier_controller.rb

@@ -71,10 +71,8 @@ class SupplierController < ApplicationController
         h[:lists] = []
         grand_total = 0.0
         for list in @supplier.active_lists(section_id: params[:section_id].presence)
-          hl = list.as_json
-          hl[:total_amount] = list.orders.inject(0.0){|sum, o| sum + o.product_orders.inject(0.0){|s, po| s + (po.amount * po.price).round(2)}}.round(2)
+          hl = list.with_info_as_json
           grand_total += hl[:total_amount]
-          hl[:section_title] = list.table.section.try(:title)
           h[:lists] << hl
         end 
         h[:total_amount] = grand_total.round(2)
@@ -87,17 +85,13 @@ class SupplierController < ApplicationController
   def close_list
     @list = List.find_by_supplier_id_and_id(current_supplier.id, params[:list_id])
     @list.close!
-    for user_id in @list.user_ids
-      broadcast_user user_id, 'list_closed', @list
-    end
     render nothing: true
   end
 
   # POST /orders/1/is_helped
   def mark_list_as_helped
     @list = List.find_by_supplier_id_and_id(current_supplier.id, params[:list_id])
-    @list.needs_help = false
-    @list.save
+    @list.is_helped!
     render nothing: true
   end