Add support for hook post actions

I'm clearing views pages when node updates and I send curls request to regenerate it (I am also using varnish and memcached), but the regenerated html output isn't correct because the node's changes haven't been written yet.

Maybe others scenarios have the same problem.

This isn't a bug or problem for normal sites but if you have custom logic using for example the hook_expire_urls_alter, this problem can be present.

Only changed the hook_node_(update|insert|delete) for use a new "hook node post update" and the problem would be solved.

see the module https://www.drupal.org/project/hook_post_action