As per the decision in#2141 we should allow bumping the auto off whenever the user wants (except beyond the template constraints), instead of just before the workspace is shutting down.

Furthermore, we should allow the user to set a time for shutdown (instead of or in addition to?) extend by a duration. We could also make the following field editable so no additional UI components are necessary.

Also the Shutdown block needs to share the timezone, otherwise the user will assume it's the Start timezone. And again, we should use the browser timezone instead of the Auto Start configured timezone. The browser timezone is more likely to represent where the user is located on page load.

Additional nitpick: we should standardize on 12 hour since most of our customers are in the US/CA.