* in OnlineFeed screen
	* if feed exists, "Limit episodes" row is not shown, number of episodes in existing feed is shown
	* if the existing feed has a different url, "Update url" button is shown, which updates the feed's url and opens it
* in MediaPlayer, when checking duplicates, duration is checked to be close
* in EpisodeInfo, show last played date if set
* ensured when receiving feeds from other device, feeds are put to the current volume
