Calendar-specific filters that persist across sessions and devices

Allow Calendar filters to be set independently and persist

Allow the Calendar to have its own filter settings that are independent from filters used elsewhere in Trakt. Right now, filters are intended to be global, which makes it difficult to customize the Calendar without affecting other views. Calendar preferences should also persist when leaving the Calendar and returning later, including across sessions and devices where possible. For example, the Calendar could hide watchlisted shows that haven't been started, while those shows still appear normally in other parts of Trakt. The Calendar serves a different purpose from most other Trakt views — primarily a way to see what's coming up from shows being actively watched, rather than everything expressed interest in — so persistent, Calendar-specific filters would make the Calendar much more useful while avoiding unintended changes elsewhere in Trakt.