Entity status + drafty

Same changes as https://www.drupal.org/node/2389185
I think if loading works, we should use loading, because there is a lot of data prepared when saving e.g. a node (and not just is_new). Re-loading while a little more work (as its in the same transaction and the data has just been written, it should be still "fresh" in the DB), should avoid having to deal with side effects of added data to the object.

On the other hand it certainly is allowed to e.g. use a node in normal ways that was just inserted or updated, so maybe in practice this problem won't occur and a @todo or note ensure that when side effects occur to check this.