Bug Fixes and Improvements

Ghost lobbies: Fixes issue when player cancels join game in multi-player lobby causing an un-joinable ghost game to persist

Saved games no longer reference Steam nickname: Prevents issue where players who changed their nicknames after saves were no longer able to see their saved games. Does not inoculate existing saves made prior to this fix

Replay crash: Fix for low-repro issue of replays crashing when loading in twice