Reducing spam from IRC netsplits.

[Anna Bakker]

When a large netsplit occurs, McObot relays each nick's quit, join and then identity ingame (and join to staff channel if a player is staff). Which is at least 3 lines ingame per user in the netsplit.

If there were 10 people it would create around 30 lines ingame, which is quite spammy. There is also one line in IRC per user joining from the netsplit, (checking identity)

This is a enchancement to make McObot ignore netsplits or put all the joins in one line, and all the quits on another etc, then possibly ignore identity checking.