Show more relevant warnings if schema is out of date

Currently if you have a few updates to run that include the metatag schema update your site will have errors on every page until the update is done running.

This was on every page of my site for a while for anonymous users:

https://www.evernote.com/shard/s120/sh/55884824-8c26-4aef-ada1-63b98bb40...

* drupal_is_cli is the code for handling looking for a cli user.
* the current warning message is displayed to all users but they do not care and do not have the ability to do anything about it. The "access site reports" permission would let someone see the watchdog message (so no access bypass) and is likely on roles that can run update.php.