resetPages = function resetPages(transacting) {
                return ghostBookshelf.knex.raw('UPDATE posts set html = NULL WHERE type = \'page\' AND lexical IS NOT NULL').transacting(transacting);
            }
We update the tags after the Post was inserted.
We update the tags before the Post was updated, see `onSaving` event.
`onCreated` is called before `onSaved`.

`onSaved` is the last event in the line - triggered for updating or inserting data.
bookshelf-relations listens on `created` + `updated`.
We ensure that we are catching the event after bookshelf relations.