The logging is now stored in the persistent client/player_details datum,
that will survive an entire round
The existing mob log is retained and a new admin verb is added to access
it. It will only show logs for the mob in question, across all players
who possibly spent time in that mob
A new log type is added that tracks the mobs the player changes across
into and the times they occured, to better help admins manage complex
situations, this also appears in the mob log as a record of the players
who entered/exited control of the mob
