Comment 15 for bug 1328786

@codygarver So there is this little thing called xautolock that can launch a command (we would want `dm-tool lock` in this case) on an inactivity timeout. The thing is the timeout can not be reset while xautolock is running without manually killing the daemon then starting it up again. Also it has a maximum of a 60 minute timeout.

I will try to get the plug coded ASAP using this.