Use the idSeason value available through episodeview instead of having to
retrieve it for every episode. Furthermore remember the already retrieved
season/show thumbs to save querying the same images again.
…r addon title and/or icon
This commit removes tons of useless queries made from the mainloop when using addon shortcuts on
the home screen. As the infomanager is asked for the icon or title only, it's not needed to check
whether the addon is enabled or disabled all the time.
When retrieving multiple songs of the same album for recently added album
songs, remember the album's cover and fanart and therefore avoid querying
and retrieving the same cover and fanart multiple times.