Use Font Awesome to replace "QR" end "EAI".
Hopefully this'll make more sense for some users.
Rename the Notification class to Notice.

To avoid conflicts with window.Notification.
Use my fixed fork of Font Awesome instead.

The other one was based on an unstable branch.
src/General/Notification.coffee -> src/General/Notice.coffee
Replace QR alerts with desktop notifications. #1053
fixes
Delete img/icon.gif.

It hasn't been used for long time now.