#12 Save game feature

[Lars Dam]

It should be possible to save games.

When creating a new gametable, it should be possible to select 'closed table'(spectators allowed) or 'private table'(spectators not allowed).
If this is done, the creator is the only player in this table.

He can then use the invite feature to invite other players.

If all players leave AND the game is still running,
then the game state is saved.

When a player connects to the server any closed/private tables he is sitting at are autoopened.
This way it should be possible to play a game async (not important for short games, but for long games this could be a really nice feature).