Ping application every hour with ajax when using heroku

[barbolo]

As the doc below says, heroku dynos sleep after 1 hour of inactivity. It's annoying to wait about 20 seconds for the dyno to wake when using a timesheet.
https://devcenter.heroku.com/articles/dynos

A possible workaround could be an ajax request to the application at least once per hour.

Another solution would be to implement issue #6 .