Don't use modeRewrite for favicon.ico
Icon
Explicit error messages for users with outdated browsers or without JavaScript enabled (minitel's nostalgic users)
Playing with HTML5 FullScreen API
The layout should be a bit better on Firefox and Chrome Android.
Big messenger improvement : the datetime was a bad idea for sorting the messages since the clients clocks are not synchronized. The new system use a fancy and very complex number incremented after each new message.
Use debounce instead of throttle for the medias. It's potentially an issue if somebody upload pictures every 20ms for months but I think nobody will do that. And the performances are better with debounce :-)
Up-to-date bower.json