Show unwatched episodes

This mod modifies the metadata title by adding the number of unwatched shows in parentheses after the title if a Series or Season has unwatched episodes, otherwise it doesn't put anything. Something to note, on the season and video poster screens, the number won't update until you go back to grid view.  I'll look into dynamically updating those if it's not too much of a performance issue.
This also shows the unwatched number in the breadcrumbs area.