Default Presence Timeout - current value is not according to the comments and too short in my experience

The comment value says default is 60 but in actuality it is set to 30.

From my usage of the Puck.js the value of 60 is much more appropriate in real world puck usage.


```
  "// How many seconds to wait for emitting a presence event, after latest time polled":0,
  "// Default is 60 seconds":0,
  "presence_timeout" : 30,
```