[IDEA] Building season system for school

[MikaelVallenet]

Currently, if a school/organization wants a session to be prepared for it, it must deploy a new instance for its module
Very soon, we will just be able to create a new session accessible from the pathwar 365d/365d.

However a school/organization may want several things:

• private session (only a list of users/mail could join this session)
• the session could have a max user per team (1,2,4 ... etc)
• the session could be autolock at a timer
• the admin of the 'sessions' could have a panel admin (w/ flags, metrics ...)
• the ability to create coupon for the session
• the ability of kicking/inviting someone from the sessions