Race condition when multiple browser windows pointing to the same page are open and the page rerenders

[SimonBiggs]

Each form assumes it is a new session and each runs the new session code. Need a way to have only one browser window run the new session code. Or even better, assign the task to the tornado server. Maybe the way to do it is to create a 'session start' API. Call the API and let tornado work out how to boot up the session.

[SimonBiggs]

It might not be wrt to a new session. Anyway, need to investigate further and rectify.