Initially collectionMode was used to hide the base collection in the library tab, but turns out Plex
propogates the settings from the base collection to the smart collection, and vice versa, so the
smart collection got hidden as well.
add new option in config form to show unwatched items only, which creates a smart collection in plex
with the unwatched filter based off the normal collection
fix#51
During label refresh if a collection was removed from agregarr its label was reset and would
therefore be treated as a pre-existing collection and not be deleted
