Security fix. Update if you ran 1.0.0.

1.0.0 sent your Sonarr or Radarr API key to the artwork sites TheTVDB, TMDB and
Fanart.tv, as a header on the poster requests the recently downloaded widget
made. Those keys grant full control of the server. If you ran 1.0.0, consider
rotating the API key of every Sonarr and Radarr instance you use.

Posters and backdrops on the dashboard and in the calendar now load from your
own instances, which already cache them, rather than from those artwork sites.
