Reverse the display order of the requests and add auto-follow

[rbino]

Right now requests are appended on the top. This makes it easy to see new requests, but it's also an hassle if the user is looking at a request in the middle since a new request scrolls everything. The issue is even worse if there's a constant stream of incoming requests.

The proposed new mechanism is this:

• New requests are appended at the end of the list
• As soon as the list has to be scrolled, the view automatically follows new incoming request
• If the user manually scrolls up, auto-follow is disabled
• A button is shown to indicate new incoming requests, and if clicked it scrolls to the bottom and resumes auto-follow