sort custom field issue filter by type and position (#12018)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10555 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/query.rb

@@ -993,7 +993,11 @@ class Query < ActiveRecord::Base
         filter_id = "#{assoc}.#{filter_id}"
         filter_name = l("label_attribute_of_#{assoc}", :name => filter_name)
       end
-      @available_filters[filter_id] = options.merge({ :name => filter_name, :format => field.field_format })
+      @available_filters[filter_id] = options.merge({
+               :name => filter_name,
+               :format => field.field_format,
+               :field => field
+             })
     end
   end