added menu sub sub items (horrible name i know)

back-office/app/models/menu_sub_item.rb

@@ -1,3 +1,4 @@
 class MenuSubItem < ActiveRecord::Base
     belongs_to :menu_item
+    has_many :menu_sub_sub_items
 end

back-office/app/models/menu_sub_sub_item.rb

@@ -0,0 +1,3 @@
+class MenuSubSubItem < ActiveRecord::Base
+    belongs_to :menu_sub_item
+end

back-office/lib/tasks/ribica.rake

@@ -292,6 +292,14 @@ namespace :ribica do
           msi.url = "/sekcija/#{section.name}/kategorija/#{category.id}/#{category.name}"
           msi.ordinal = section.order
           mi.menu_sub_items << msi
+
+          category.sub_categories.each do |sub_category|
+            mssi = MenuSubSubItem.new
+            mssi.title = sub_category.name
+            mssi.url = "/podkategorija/#{sub_category.id}/#{sub_category.name}"
+            mssi.ordinal = sub_category.order
+            msi.menu_sub_sub_items << mssi
+          end
         end
         mi.save!
       end