Invitation system

[Juan Antonio Moreno Carmona]

Hi all.

I'm doing some testing with the invitation system. Suppose I send an 
invitation from one of my rooms to a guest and I choose the option 
'once'. The guest receives the invitation and can enter the room by 
following the link in the email. So far so good. The guest now leaves 
the room but can use the link to enter the room again and again, even if 
the user who sent the invitation left the room. I don't know if that is 
the expected behavior. I have tested this both in my installation and in 
https://om.alteametasoft.com:8443/next/#user/dashboard

Regards.