set up a skeletal node server; create index.template.html and copy it to index.html
app setup
html for entering next small change
countdown: setInterval logic
countdown: minute and second display
countdown: start the timer on keypress
countdown: alert and reload once time is up
recent changes: server support for /getChanges
recent changes: when the page loads, get and display the changes
recent changes: server support for /addChange
recent changes: extract sendChanges within the server code
recent changes: call addChange when time is up