Made reseting the create game dialogue box only select 'Only regeistered users' if player is a registered user.

When in none auth mode, registered users don't exist; hence the setting
makes the game impossible to join.

Normally the setting would be greyed out when the user is unregistered,
but commit 475c54bf introduced a new edge case where the stored setting
would apply to the field even if the user is unregistered, making the
setting possible to apply in no-reg mode. Regardless, any client could
have done this, not just the default cockatrice.

The server side fix should prevent all issues in the future.

Based on feedback, allow for shortcut for specs to view hands

Gray out "only buddies/only reg users" in the “create game” dialog if
the user is unregistered