CHange hasViewers to wait 10 seconds before returning false. 1 second…

… seems to be too much.

src/zm_monitor.h

@@ -750,7 +750,7 @@ class Monitor : public std::enable_shared_from_this<Monitor> {
  static_cast<int64>(std::chrono::duration_cast<Seconds>(now.time_since_epoch()).count())
  -
  shared_data->last_viewed_time
- ) > 1 ? false : true);
+ ) > 10 ? false : true);
  }
  return false;
  }