Bots are still on the board when expired

[joakim-olesen]

Bots are still on the board when expired (see attached screen shot). Fix this. A potential quick fix is to regularly call http://diamonds.etimo.se/api/ExpiredBots

[nightkr]

As a workaround I've set up a cronjob that calls the ExpiredBots API endpoint every minute, which should clear them out.

[nightkr]

Postponing a proper fix until S2.