Description
The possibility to set the default invitation time limit from 30 seconds to "forever", so that players don't have to type "forever" every time they invite someone.

Examples:
/hi player myhome = a permanent invite since no time limit is given.
/hi player myhome 5m = a 5 minute time-limited invite.

Regards,
Sinuce

Looks great. Nice job.
I'll test out the new jenkins build asap - preferrably thursday, November 27.
Thanks.