Filter played/unplayed episodes.
Second time commiting disableing autostart.

I really need to start using the prod env to listen
Add Podcast types.

there are three podcast types that currently dictate how the episodes
are sorted and displayed.

Normal: Newest episodes first.
Serial: Oldest episodes first.
News:   Newest first, only show the episodes from the last week.

The way news works might be changed to allow for weekly, monthly, and
daily programs.

This setting _will later_ be persisted through the subscriptions model.
Moved 'type' code from episode_list to podcast.show
use custom dropdown instead of select to change podcsat type
Add subscription type to the database
Save subscription type
Merge branch 'subscription_types'
Merge branch 'master' into heroku