flagging workflow changes per http://meta.discourse.org/t/we-need-an-archive-flag-notification-button/7450

db/migrate/20130619063902_add_defer_to_post_actions.rb

@@ -0,0 +1,7 @@
+class AddDeferToPostActions < ActiveRecord::Migration
+  def change
+    # an action can be deferred by a moderator, used for flags
+    add_column :post_actions, :defer, :boolean
+    add_column :post_actions, :defer_by, :int
+  end
+end