* added description in SubscriptionLog
* in OnlineFeed
	* ensure to show all prior cancellation logs (if any) possibly related to the feed
	* if feed was previously unsubscribed but preserved (frozen), shows the preserved
* Note, to unfreeze a feed
	* first set the feed to a normal parent volume (or none) in the settings, then enable update
	* do "Refresh complete feed" from the menu in FeedDetails screen
