a few more lobby fixes. add some debug logging to the AI thread to figure out why they sometimes try to attack themselves (and some secondary checking to make sure they dont)

first move.

position

Don't look more than a half move ahead for purposes of seeing of a move
places yourself in check.

rather than throwing an exception.

Add a promote property to pawns to indicate that they should be promoted.

a moves array to the constructor.

create commands.js in game directory, and assign overrides as follows:
this.<method> = function(client,packet) { <code> }

- Helpful warnings on connection problems.
- Temporarily disables InterBBS functions for the rest of the session, if it detects a connection error to database.
- More verbose InterBBS startup messages.
- Thanks PBMountainCat for reporting my terrible debug log() messages. Shameful. :|

breaks the constructor property.