Add ability to lock a web page to stop them from being published/updated
It would be useful to have some sort of lock functionality for web/landing pages so that you could make edits and not worry about someone else publishing those edits until they're ready.
For example, at the moment we're updating a multi-language group of pages over the course of a week, with frequent reviews and re-edits, and I don't want to stage the pages in Content Staging as the pages are in a multi-language group so staging and re-publishing them will remove them from said group (and thus the relationship between them, which itself is another idea). In this case it would be useful to prevent these from being accidentally published by someone, instead of notifying people that this is happening and hoping no one forgets or makes a mistake.
