Add comments on svg.template
Whitespace
Todo note about handling disconnects for displays

We should check if the disconnected connection belongs to a display and send notifications if so. This will allow better alerts for displays in the web ui and monitoring.
Directory for storing concerns relating to controllers
Upgrade websocket-rails to 0.7.0 + patch

We use a custom fork of websocket-rails 0.7.0 on github for now because of a bug causing thin to crash with syncronization enabled with unpatched 0.7.0 websockets, see https://github.com/websocket-rails/websocket-rails/issues/231 for details and current status.
Work-around for websocket-rails issue #228

The websocket-rails controllers aren't clearing the query cache between events received on the same websocket connection. We work around this by creating a before_filter that clears the query cache before processing any events.