Since we already have a handy list of Admins, why not use it? (Fixes TODO.)
Check the bounds of the numerical game options on the server, and reject settings out of range. Fixes #103. No more games with 9001 blank white cards. Also use constants for all of those values for min/max/default.
tweak user/game limits again
Improve logging. Stop using toString() on Player/User outside of logging.
Merge pull request #100 from uecasm/admins

Since we already have a handy list of Admins, why not use it?
Refactor game options into subobject.