Create cron job to close websocket for a few hours at least once a day

[codespearhead]

If the websocket connection is open for several days intermittently, the connection will be lost after about 5 days.

I suspect that if there was some sort of cronjob that closes it on a timely basis so the connection stays closed at least a few minutes a day, the problem wouldn't happen as often, if at all.

The last event log before the connection no longer responds is shown at #12 .

[codespearhead]

Invalidation of sessions don't seem to happen as often as it used to.

However, this is still a valid enhancement.

Temporary solution provided at 7c71cef .