Multiplayer saved games

We have single player saved games and multiplayer rejoin, we also need multiplayer saved games. This means having a main menu option like Multiplayer > Load Game that allows the users to host a game from the saved games list, then displays a new yet-to-be-designed UI. We could use elements of the current multiplayer setup screen for consistency, except that most of the settings would be defined in the saved game data and only displayed for confirmation.