TODOS [6/7]

[X] Display an animation when connecting to another peer
[ ] If getUserMedia fails, allow retry
[X] Display kbps
[X] Use webrtc-media custom element to create the user’s peer connection
[X] Render UserWithoutWebRtc
[X] Don’t set WebRtcMedia.pc from js, use elm instead
[X] Decide if server.js should serve the elm app -> no See uNetworking/uWebSockets.js#110

Ideas

Allow user to trigger a reconnection attempt after connection negotiation failure
Allow user to change devices inside session
- polit-impolite caller pattern or
- caller-callee pattern
Allow user to take a still image of herself
- transmit still image to other users and display that during connection initiation