Add "Unpublished Changes" status in publish dialog

Hi Guys

Unless I have overlooked this feature, it would be great if the publish dialogue dropdown has an icon or some form of notifier to show that the ‘published’ files are upto date.

Or to word it another way. A notifier to inform you that the published version is different to the current project status. (e.g. ‘You have unpublished changes’

I like it! Great idea @jeremy!