Fixed a major performance problem with installing over 10000 threads when a given amount of accounts exists on the DB.
Added information for the available 2nd jobs of the Explorers, introducing to the players the gists of each job branch.
Made NPCs now work properly on multiworld system. Solved multiple issues
regarding Player Shops not giving back items properly when owner exits.
Added restriction on changing channels at FM rooms, preventing shop
owner entering Cash Shop.