Doubles server heartbeat timeout to avoid AI timeout issue.
Doubles server heartbeat timeout to avoid AI timeout issue.

For some reason, on the alpha server, AI agents and the Manager would
timeout after 60 seconds, despite heartbeats being sent every 30. This
commit doubles the server's timeout interval from 60 to 120 and the
problem seems to have gone away.

JackieChiles/Cinch,JackieChiles/Cinch,JackieChiles/Cinch