Extend accordian one level so that episodes will be collapsed by season

[kevnfu]

Todo.

[kevnfu]

Actually, I am against collapsing the episodes now. It doesn't really make sense in either of the modes Watchlist

• user will likely have marked most of the episodes
• they will want to see the episodes of the latest season. All Shows
• Basically a list of all rated shows. User will probably want to see them all.

What do you think, @Paintgoo?