* Playlist player will now use the iTunes episode image if one is set for each episode. Program level image is used if no image is set.

* Playlist player taxonomy podcasting now accepts the term_taxonomy_id, making it more efficient.

* Moved the Shortcodes into their own section in Media Appearance settings, they are now included in Podcast Channels, Category Podcasting, Post Type podcasting and Taxonomy podcasting with the appropriate attributes set for convenience.

git-svn-id: https://plugins.svn.wordpress.org/powerpress/trunk@1013466 b8457f37-d9ea-0310-8a92-e5e31aec5664