Mention asynchronous feeds

Configuration

The feed is asynchronous list that is loaded from server (@ marker) after random delay:

In order to run the server go to the tests/_utils/asyncserver/ and run:

node index.js
	

Interaction

Controlling the cache:

Behavior

There should be no errors even if request took longer time or came out-of-order.

If the asyncserver is not running the notification should be shown for failed requests.

Disclaimer

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