Changes to logging & broadcasting of some commands

- /fr and /frt now behave as follows:

    1) Regardless of whether they are used in a battle or in the lobby,
       both commands show a message to all users in the lobby with the
       `receiveauthmessages` permission (which is % and up by default).

    2) If used in a battle, the message is also shown to all users in
       the battle, even if they are not auth. In addition, the message
       is written to the lobby file logs.

- use of /lockdown, /endlockdown, /kill, /crashfixed, and /crashnoted
  is now written to the lobby file logs (including the identity of the
  person who used the command)